Ancient Coin Value Guide — Book II

Kinzer Ancient Coin Value Guide · Section 2 · Book II

Prepared by Kinzer Coins · First Edition · Market review: September 2026

Ancient Coin Value Guide Book II
The Tetrarchy & Constantine the Great Dynasty

AD 284–363. A late Roman coin value guide covering Diocletian, the Tetrarchy, Constantine the Great, the Constantinian dynasty, Julian II, and related rulers. Certified/slabbed prices, current fixed-price retail, and buyer-inclusive raw auction evidence are kept separate.

View Book II Market Cards Download First Edition PDF

Book I Book II Book III\nBook IV
Quick answers

Late Roman Coin Values, Explained Clearly

Book II is designed to answer practical collector questions such as “What is a Constantine coin worth?”, “What is a Diocletian coin worth?”, and “How do slabbed late Roman coins compare with raw retail and auction prices?”

What period does Book II cover?
AD 284–363, from Diocletian and the Tetrarchy through Constantine the Great, the Constantinian dynasty, and Julian II.
How are values compared?
Certified/slabbed market first, fixed-price raw retail second, and buyer-inclusive raw auction acquisition cost third.
Why is there no single Constantine coin price?
Ruler, political status, denomination or module, mint, reverse type, grade, surfaces, scarcity, certification, and sales venue can create separate markets.
How current is the research?
Book II retail observations were checked primarily September 19–20, 2026. Auction results use historical FX where needed and exact buyer premiums rather than a blanket percentage.

See the Emperor-by-Emperor Book II Price Reference

How the guide works

Market evidence in a fixed order

Book II preserves the methodology established in Book I while giving greater weight to type, status, mint, denomination, and specialist-market splits where Constantine-era coinage demands it.

1. Certified / slabbed market first
Certified material is treated as its own market and compared grade-for-grade where possible.
2. Fixed-price retail second
Current asking prices show what a collector can actually buy now without waiting for an auction.
3. Buyer-inclusive raw auction third
Auction acquisition cost uses the hammer plus the mandatory buyer premium for that exact sale. No blanket premium is applied.
4. Thin and specialist markets stay separate
Rare rulers, unusual types, precious metals, and specialist material are not forced into misleading broad ranges.
Practical collector reference

Book II Market Cards

Current Book II website reference synchronized to the live Kinzer Ancient Coin Value Guide methodology. Certified / Slabbed, Current Fixed-Price Retail, and Raw Auction evidence remain separate. Guide Orientation is editorial and is not presented as transaction evidence.

Diocletian

FOLLIS / NUMMUS / ANTONINIANUS / ARGENTEUS
COLLECTOR PRICE GUIDE
Certified grade evidence
Ordinary follis / nummus
MSNGC MS 5/5, 3/5 Heraclea follis $233 BI
Choice AUNGC Choice AU 5/5, 5/5 Aquileia follis $368 BI
Argenteus
Choice AUNGC Choice AU 5/5, 4/5 Cyzicus argenteus $1,960 BI
RAW AUCTION / MARKET SCHEDULE
ENTRYTYPICALCHOICE
Ordinary follis / nummus
$180$180–$240$240–$350+
Pre-reform antoninianus
$35–$65$65–$125$125–$270
Argenteus
$780$1,000–$1,200$1,200–$1,500+

Maximian

FOLLIS / ANTONINIANUS / ARGENTEUS
COLLECTOR PRICE GUIDE
Certified grade evidence
Ordinary follis
Choice XFChoice XF 4/5, 4/5 Cyzicus follis $184 BI
Choice AUChoice AU 5/5, 4/5 Ticinum follis $184 BI
AUNGC AU 5/5, 4/5 Trier follis $245 BI
Antoninianus
VFNGC VF antoninianus $110 BI
AUNGC AU antoninianus $306 BI
RAW AUCTION / MARKET SCHEDULE
ENTRYTYPICALCHOICE
Ordinary follis
$100–$150$175–$250$250–$400
Antoninianus
$25–$50$50–$100$100–$200+
Argenteus
$550+$600–$950$950–$1,250+

Carausius

ANTONINIANUS
COLLECTOR PRICE GUIDE
Certified grade evidence
Ordinary London antoninianus
AUNGC AU 5/5, 4/5 London antoninianus about $1,164 BI
RAW AUCTION / MARKET SCHEDULE
ENTRYTYPICALCHOICE
Ordinary London antoninianus
$200$225–$300$300–$400+

Allectus

ANTONINIANUS / QUINARIUS
COLLECTOR PRICE GUIDE
RAW AUCTION / MARKET SCHEDULE
ENTRYTYPICALCHOICE
Ordinary London antoninianus
$125$200–$350$350–$575
Ordinary London quinarius
$150$170–$200$200–$300+

Constantius I

FOLLIS
COLLECTOR PRICE GUIDE
Certified grade evidence
Caesar ordinary follis
AUNGC AU 5/5, 4/5 silvered Caesar follis about $551 BI
RAW AUCTION / MARKET SCHEDULE
ENTRYTYPICALCHOICE
Caesar ordinary follis
$100$150–$225$225–$350
Augustus ordinary follis
$75$125–$200$200–$300+

Galerius

FOLLIS / ARGENTEUS
COLLECTOR PRICE GUIDE
Certified grade evidence
Augustus ordinary follis
MSNGC MS 4/5, 4/5 Cyzicus Augustus follis about $293 BI
MSNGC MS 5/5, 4/5 Cyzicus Augustus follis about $415 BI
RAW AUCTION / MARKET SCHEDULE
ENTRYTYPICALCHOICE
Caesar ordinary follis
$120$145–$225$225–$330
Augustus ordinary follis
$75$120–$180$180–$275

Severus II

FOLLIS
COLLECTOR PRICE GUIDE
Certified grade evidence
Caesar ordinary follis
Choice XFNGC Choice XF Serdica Caesar follis $270 BI
Augustus ordinary follis
AUAU Augustus follis about $366, exact certified observation
RAW AUCTION / MARKET SCHEDULE
ENTRYTYPICALCHOICE
Caesar ordinary follis
$80$100–$150$150–$225+
Augustus ordinary follis
$125$150–$250$250–$350+
Quarter follis
$95$100–$150$150+

Maximinus II Daia

BRONZE
COLLECTOR PRICE GUIDE
Certified grade evidence
Augustus ordinary bronze
AUNGC AU 4/5, 4/5 Thessalonica Augustus bronze about $154 BI
Specialist Sol / Serapis
Choice AUNGC Choice AU Sol/Serapis specialist observations ~$586–$793 BI
RAW AUCTION / MARKET SCHEDULE
ENTRYTYPICALCHOICE
Caesar ordinary GENIO
$50$75–$150$150–$250+
Augustus ordinary bronze
$40$75–$150$150–$200+

Maxentius

FOLLIS
COLLECTOR PRICE GUIDE
Certified grade evidence
Ordinary temple follis
MS StarNGC MS Star 5/5, 5/5 Aquileia temple follis about $1,708 BI
FIXED-PRICE RETAIL
DioscuriCurrent asking range $250–$350
Current asking-price evidence; kept separate from auction and certified markets.
RAW AUCTION / MARKET SCHEDULE
ENTRYTYPICALCHOICE
Ordinary temple follis
$45$60–$120$120–$200+
Dioscuri
$250$300–$350$350+
Ostia Fides / Victory
—$600–$1,200 observed—

Constantine I

FOLLIS
COLLECTOR PRICE GUIDE
Certified grade evidence
BEATA TRANQVILLITAS
MSMS silvered BEATA $312 BI
VICTORIAE LAETAE
Choice AUChoice AU silvered VICTORIAE $512 BI
PROVIDENTIAE campgate
Choice XFChoice XF campgate $149 BI
Additional certified evidence
VOT XX
MS StarMS Star silvered VOT XX $1,952 BI
IOVI CONSERVATORI
MS StarMS Star silvered IOVI $5,612 BI
RAW AUCTION / MARKET SCHEDULE
ENTRYTYPICALCHOICE
Early large follis
$90$100–$125$125–$200+
SOLI INVICTO
$35$50–$65$65–$100+
BEATA TRANQVILLITAS
$30$40–$60$60–$100+
VICTORIAE LAETAE
$40$60–$80$80–$125+
PROVIDENTIAE campgate
$35$50–$70$70–$100+
Additional market types
GLORIA EXERCITVS - 2 standards
$25$40–$70$70–$100+
GLORIA EXERCITVS - 1 standard
$40$60–$90$90–$125+
VOT XX
$35$50–$65$65–$100+
IOVI CONSERVATORI
$40$50–$75$75–$125+
SARMATIA DEVICTA
$45$55–$70$70–$100+
Divus quadriga
$25$40–$50$50–$75+
CONSTANTINIANA DAFNE
$190$200–$350$350–$500+

Licinius I

GOLD
COLLECTOR PRICE GUIDE
Certified grade evidence
Earlier laureate IOVI
Choice XFChoice XF ordinary Jupiter about $84
Choice AUChoice AU ordinary Jupiter about $114
RAW AUCTION / MARKET SCHEDULE
ENTRYTYPICALCHOICE
Earlier laureate IOVI
$40$50–$60$60–$90+
Later reduced / radiate
$20$25–$40$40–$60+

Licinius II

BRONZE
COLLECTOR PRICE GUIDE
RAW AUCTION / MARKET SCHEDULE
ENTRYTYPICALCHOICE
Ordinary Jupiter
$45$50–$60$60–$90+
Other common bronze
$55$75–$115$115–$150+
Rare Siscia bust / reverseBI rare Siscia Victory / mappa / VOT-captive auction observation ~$240

Crispus

BRONZE
COLLECTOR PRICE GUIDE
Certified grade evidence
Broad ordinary bronze
Choice AUChoice AU ordinary bronze $79 BI
VOT V
Choice AUChoice AU VOT V $159 BI
MSMS VOT V $171 BI
RAW AUCTION / MARKET SCHEDULE
ENTRYTYPICALCHOICE
Broad ordinary bronze
$50$60–$90$90–$125+
VOT V
$50$60–$90$90–$125+
Campgate
$60$75–$100$100–$150+
BEATA
$50$60–$80$80–$100+
PRINCIPIA
$60$75–$100$100–$150+
Additional market types
IOVI
$25$50–$75$75–$100+

Constantine II

BRONZE
COLLECTOR PRICE GUIDE
Certified grade evidence
Caesar campgate
Choice AUChoice AU silvered Heraclea campgate about $244 BI
Choice AUChoice AU 5/5, 5/5 silvered campgate about $312 BI
RAW AUCTION / MARKET SCHEDULE
ENTRYTYPICALCHOICE
Caesar GLORIA
$25$40–$70$75–$100+
Caesar campgate
$40$60–$100$100–$150+
Caesar VOT
$50$60–$100$100+

Constans

IMPERIAL COINAGE
COLLECTOR PRICE GUIDE
Certified grade evidence
VICTORIAE
MSCertified MS VICTORIAE about $99 BI
Choice AUCertified Choice AU 5/5, 3/5 VICTORIAE about $192 BI
RAW AUCTION / MARKET SCHEDULE
ENTRYTYPICALCHOICE
VICTORIAE
$30$35–$45$45–$75+
FEL TEMP hut
$30$40–$70$70–$90+
FEL TEMP galley
$40$75–$150$150–$250+
FEL TEMP phoenix
$130$150–$200$200–$300+

Constantius II

BRONZE
COLLECTOR PRICE GUIDE
Certified grade evidence
Large early FTR fallen horseman
MSMS large early FTR about $220
RAW AUCTION / MARKET SCHEDULE
ENTRYTYPICALCHOICE
Caesar GLORIA
$15$25–$50$50–$60+
Caesar campgate
$60$75–$100$125–$150+
Augustus VICTORIAE
$20$25–$40$40–$60+
Large early FTR fallen horseman
$100$110–$150$150–$200+
Later reduced FTR
$10$15–$30$30–$45+
Additional market types
SPES (late bronze)
$20$25–$35$35–$45+

Dalmatius

IMPERIAL COINAGE
COLLECTOR PRICE GUIDE
Certified grade evidence
Ordinary GLORIA
AUNGC AU Constantinople GLORIA about $171 BI
RAW AUCTION / MARKET SCHEDULE
ENTRYTYPICALCHOICE
Ordinary GLORIA
$40$60–$120$120–$250+

Vetranio

IMPERIAL COINAGE
COLLECTOR PRICE GUIDE
RAW AUCTION / MARKET SCHEDULE
ENTRYTYPICALCHOICE
CONCORDIA MILITVM
$120$125–$175$175–$250+
HOC SIGNO - VF
$125$150–$175$175–$225
HOC SIGNO - EF
$250$250–$300$300–$350
VIRTVS / GLORIA
$75$100–$150$150+

Magnentius

IMPERIAL COINAGE
COLLECTOR PRICE GUIDE
RAW AUCTION / MARKET SCHEDULE
ENTRYTYPICALCHOICE
VICTORIAE
$40$45–$60$60–$100+
SALVS / large Chi-Rho
$65$100–$165$200–$400+

Decentius

IMPERIAL COINAGE
COLLECTOR PRICE GUIDE
RAW AUCTION / MARKET SCHEDULE
ENTRYTYPICALCHOICE
VICTORIAE ordinary
$45$60–$100$100–$150+
SALVS / Chi-Rho
$85$85–$125$150–$300+

Nepotian

IMPERIAL COINAGE
COLLECTOR PRICE GUIDE
Certified grade evidence
VRBS ROMA
Choice VFNGC Choice VF 4/5, 2/5 VRBS ROMA about $6,600 BI
GLORIA ROMANORVM
Choice VFNGC Choice VF 4/5, 2/5 GLORIA ROMANORVM, smoothed, about $10,200 BI

Julian II

IMPERIAL COINAGE
COLLECTOR PRICE GUIDE
RAW AUCTION / MARKET SCHEDULE
ENTRYTYPICALCHOICE
Caesar ordinary / SPES
$20$30–$50$50–$75+
Augustus VOT
$40$50–$75$75–$150+
Bull - VF-Good VF
$100$150–$300$300+
Bull - EF
$300$400–$700$700+

Helena

IMPERIAL COINAGE
COLLECTOR PRICE GUIDE
Certified grade evidence
SECVRITAS ordinary
Choice XFChoice XF Antioch benchmark about $380
RAW AUCTION / MARKET SCHEDULE
ENTRYTYPICALCHOICE
SECVRITAS ordinary
$40$60–$100$100–$150+

Fausta

IMPERIAL COINAGE
COLLECTOR PRICE GUIDE
RAW AUCTION / MARKET SCHEDULE
ENTRYTYPICALCHOICE
SPES / SALVS ordinary
$65–$85$90–$110$110–$150

Theodora

IMPERIAL COINAGE
COLLECTOR PRICE GUIDE
RAW AUCTION / MARKET SCHEDULE
ENTRYTYPICALCHOICE
PIETAS ROMANA ordinary
$30$35–$50$50–$100+

Galeria Valeria

IMPERIAL COINAGE
COLLECTOR PRICE GUIDE
Certified grade evidence
VENERI VICTRICI ordinary
Choice XFNGC Choice XF 5/5, 5/5 Antioch $380 BI
RAW AUCTION / MARKET SCHEDULE
ENTRYTYPICALCHOICE
VENERI VICTRICI ordinary
$35$75–$125$125–$200

Hannibalianus

SOLIDUS
COLLECTOR PRICE GUIDE
RAW AUCTION / MARKET SCHEDULE
ENTRYTYPICALCHOICE
Lower-grade SECVRITAS
$150$150–$250$250+
Solid VF-Good VF
$250$250–$500$500+
Strong EF
$500$500–$700+$700+
Coin types covered

Late Roman Coin Types & Value Questions

Book II covers the principal coin families collectors encounter from the Tetrarchy through the Constantinian dynasty. These types should be valued by exact ruler, issue, mint, module, grade, surfaces, and market venue rather than by age alone.

Follis / nummus values
Large Tetrarchic reform bronzes of Diocletian, Maximian, Constantius I, Galerius, Severus II, Maximinus II, Maxentius, and related rulers.
Antoninianus values
Late radiates of Diocletian, Maximian, Carausius, and Allectus, kept separate from later reform bronze.
Argenteus values
High-purity silver reform coinage of Diocletian and Maximian, treated as a different market from ordinary bronze.
Constantinian bronze values
Campgates, GLORIA EXERCITVS, VOT issues, FEL TEMP REPARATIO, phoenix, hut, galley, and other common fourth-century families.
Christian-symbol coin values
Chi-Rho issues of Magnentius and other overtly Christian or Constantine-era symbolic types are treated by exact issue and condition.
Specialist and scarce types
Nepotian, Hannibalianus, Vetranio, scarce Ostia issues, unusual reverse families, and other thin markets remain specimen-specific.
Book II directory

Twenty-seven ruler and family chapters

From Diocletian’s reform era through Julian II and the wider Constantinian family, each chapter follows the same market hierarchy while splitting types whenever ruler-wide averages would distort value. Choose a chapter below to jump directly to that Book II price reference.

Chapter 1Diocletian
Chapter 2Maximian
Chapter 3Carausius
Chapter 4Allectus
Chapter 5Constantius I
Chapter 6Galerius
Chapter 7Severus II
Chapter 8Maximinus II Daia
Chapter 9Maxentius
Chapter 10Constantine I
Chapter 11Licinius I
Chapter 12Licinius II
Chapter 13Crispus
Chapter 14Constantine II
Chapter 15Constans
Chapter 16Constantius II
Chapter 17Dalmatius
Chapter 18Vetranio
Chapter 19Magnentius
Chapter 20Decentius
Chapter 21Nepotian
Chapter 22Julian II
Chapter 23Helena
Chapter 24Fausta
Chapter 25Theodora
Chapter 26Galeria Valeria
Chapter 27Hannibalianus
Research notes

How Book II Was Researched

Prepared by Kinzer Coins as a dated collector-market reference. The guide separates evidence classes instead of blending unlike observations, preserves specialist and thin-market treatments, and uses type/status/module splits whenever a ruler-wide average would mislead.

Certified market
Grade-specific slabbed observations are treated separately from raw coins.
Current dealer retail
Active fixed-price asking prices are used to show what collectors can buy now.
Buyer-inclusive auctions
Hammer plus the mandatory premium for each exact sale; no universal premium is applied.
Foreign-currency sales
Historical exchange rates are used for foreign auction results rather than current FX.

Market evidence is a dated snapshot, not a guarantee of future value. Ancient coins remain specimen-specific.

Questions collectors ask

Book II FAQ

What is a Constantine the Great coin worth?
There is no single Constantine price. Common bronze issues can remain affordable, while scarcer mints, reverse types, exceptional surfaces, rare varieties, and high-grade certified examples can move into much higher price levels. Exact attribution comes first.
What is a Diocletian coin worth?
Diocletian values vary sharply by denomination and type. A common antoninianus, a large reform follis, and an argenteus belong to different markets and should not be compared using one ruler-wide average.
Why are certified coins shown first?
Certification narrows the comparison by grade and attribution. Book II therefore treats the slabbed market as its own evidence set rather than blending it with raw coins.
Why can Constantine-era coins have very different values?
Ruler, status, denomination, mint, reverse type, issue, grade, surfaces, scarcity, and collector demand can all change the market. Broad ruler averages can hide those differences.
How are auction values calculated?
Buyer-inclusive acquisition cost uses the hammer price plus the mandatory buyer premium for that exact sale. No blanket premium percentage is applied across auction houses.
What happens when the market is too thin?
The guide does not force a clean range. Small samples, exceptional specimens, specialist material, and repeated examples are identified separately when they would distort a normal benchmark.
The series

Continue the Kinzer Ancient Coin Value Guide

Book I covers the Crisis of the Third Century, AD 235–285. Book II begins with Diocletian and carries the market study through AD 363.

Read Book I View Book II Market Cards Download Book II PDF

Book II is live online and available as a downloadable First Edition PDF. The complete quick-reference pricing panels remain available from the main Value Guide.

Now Live · Section 3

Book III: The End of the Western Roman Empire

AD 364–476, from Valentinian I through Romulus Augustulus. Book III is now published with 27 ruler chapters and specialist-market treatment for the final western emperors.

Read Book III
Now Live · Section 4

Book IV: The Julio-Claudian Dynasty

27 BC–AD 68. Book IV is now published with 14 ruler and family-member chapters and type-specific Julio-Claudian market treatment.

Read Book IV
Now Live · Section 5

Book V: The Flavian Dynasty

AD 68–96. Book V is now published, covering the Year of the Four Emperors and the Flavian dynasty through Domitian.

Read Book V

Get notified when Book V: The Flavian Dynasty is published.

Source Use & Rights

Independent market research, with source boundaries

The Kinzer Ancient Coin Value Guide reports factual market observations and Kinzer Coins' own analysis. It does not claim ownership of third-party auction facts, dealer facts, catalog text, photographs, databases, trademarks, or grading systems.

Originating sources control.
Auction search services and marketplaces may help locate a record, but the originating auction house or dealer is preferred for verification. Third-party databases are not republished as Kinzer datasets.
No database reproduction.
The guide publishes selected factual observations, ranges, and commentary rather than copies of an auction archive, dealer marketplace, or search service. Future research should avoid systematic harvesting of marketplace or aggregator data.
Image rights stay with the source.
Illustrations are Kinzer-owned, public domain, or reused under the license or permission stated in the relevant volume. Crops and resizing are disclosed. A cropped CC BY-SA image remains subject to the same ShareAlike license as its source.
Names and marks identify sources only.
NGC, auction-house, dealer, marketplace, and other third-party names and marks belong to their respective owners. Their mention does not imply sponsorship, partnership, approval, or endorsement of Kinzer Coins or this guide.

This is a dated educational market reference, not a formal appraisal, insurance valuation, investment recommendation, or guarantee of future value. If a rights holder believes a credit, source attribution, or image-use statement is incorrect, Kinzer Coins will review and correct or replace it.

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