Gallienus Zoo Series Coins: Animals, Gods & Officina Marks
Gallienus Zoo Series Coins: Animals, Gods & Officina Marks
A defined set of animal antoniniani that rewards a beginner and a specialist alike.
Among the most distinctive Roman coin series of the third century is the so-called Zoo Series of Gallienus: antoniniani showing real and mythical creatures paired with appeals to gods as protectors of the emperor.
For collectors, the series offers something unusual, a defined group of coins with recognizable animals, deity legends, mint-workshop marks, and enough variety to build anything from a small representative set to a serious specialist collection.
Gallienus and the CONS AVG Formula
Gallienus ruled jointly with his father Valerian from AD 253 and then alone after Valerian's capture by the Sasanians in AD 260. His sole reign unfolded amid invasions, rebellions, breakaway regimes, plague, and severe monetary disruption. The Zoo Series belongs near the end of his reign, conventionally dated around AD 267 to 268. The best-known series was struck at Rome, with a related and much smaller series also known from Siscia.
The reverse legends pair a deity with CONS AVG, an abbreviated appeal to that god or goddess as protector or preserver of the emperor. That formula is the key to understanding the series. The animals are not simply generic symbols for strength, speed, or renewal, they belong to specific divine associations expressed by legends such as DIANAE CONS AVG, APOLLINI CONS AVG, IOVI CONS AVG, and SOLI CONS AVG.
The Main Deities and Creatures
The Rome-mint Zoo Series includes several major deity-and-creature groups, and individual varieties can differ in direction, pose, bust type, legend, and officina.
- Diana, DIANAE CONS AVG, deer- and antelope-like animals (antelope, doe, stag, gazelle), the most frequently encountered
- Apollo, APOLLINI CONS AVG, mythical creatures including the centaur and griffin
- Jupiter, IOVI CONS AVG, principally a goat
- Sol, SOLI CONS AVG, a winged horse usually catalogued as Pegasus, and the bull
- Neptune, NEPTVNO CONS AVG, marine hybrids such as the hippocamp and Capricorn
- Liber Pater, LIBERO P CONS AVG, a large feline generally described as a panther
- Hercules, HERCVLI CONS AVG, the scarce lion and boar
- Mercury, MERCVRIO CONS AVG, very rare, a fantastic marine creature usually described as a criocamp
The broader Zoo coinage also includes issues for Gallienus' wife Salonina, whose IVNONI CONS AVG reverses pair Juno with a deer- or antelope-like creature. Animal imagery by itself does not make a coin part of the Zoo Series: a she-wolf-and-twins reverse, for example, is not a Zoo coin. The recognized series is defined by its CONS AVG deity legends, issue structure, and related mint marks, not merely by the presence of an animal. An "elephant of Jupiter" likewise does not belong among the recognized core types.
The Officina Marks: The Hidden Structure
One of the most interesting features of the Rome series is its relationship with the mint's workshops, or officinae. Marks in the exergue can use Greek letters for the early workshops and numerals for later ones, and particular deity-and-animal types are strongly associated with particular officinae.
The standard Rome framework most strongly associates Sol's winged horse with officina 1, Liber's panther with 2, Diana's antelope with 3, Apollo's griffin with 4, Diana's doe with 5, Jupiter's goat with 6, Apollo's centaurs with 7 to 8, Neptune's hippocamp with 9, Diana's stag with 10, and Diana's gazelle with 11 to 12. Secondary and unusual varieties exist, so the mintmark should be checked against a specialist reference rather than used as a one-step attribution rule. Other secondary combinations, Hercules' lion with officina 1, Juno's animal with 4, Hercules' boar with 5, Neptune's Capricorn with 6, Mercury's criocamp with 8, and Sol's bull with 11, help explain why advanced collectors can take the series much further.
A Practical Beginner Checklist
You do not need every known variety to enjoy the series. A strong beginner set could start with six representative coins.
- Diana, antelope, doe, stag, or gazelle
- Apollo, centaur or griffin
- Jupiter, goat
- Sol, winged horse or bull
- Neptune, hippocamp or Capricorn
- Liber Pater, panther
From there, add different animal varieties, officinae, directions, and bust types. Advanced collectors can pursue the scarce Hercules types, the extremely rare Mercury issue, Salonina's Juno coinage, and the related Siscia material. Common Diana, Apollo, Jupiter, Sol, Neptune, and Liber types can often be approachable, while rarity, condition, centering, silvering, portrait quality, animal clarity, officina, and exact variety can change value substantially. Scarce Hercules and Mercury types occupy a very different market from common Diana issues.
For a first Zoo coin, prioritize a readable deity legend, identifiable creature, visible officina mark if possible, and natural surfaces. More importantly, learn to attribute the combination of legend plus creature plus officina, that is where the series becomes more than a group of animal pictures. The Zoo Series teaches Roman religious formulas, mint organization, officina marks, late antoninianus fabric, portrait varieties, mythology, and the realities of collecting coins produced during the Crisis of the Third Century.
Hold what the greats held.
Frequently Asked Questions
What is Gallienus' Zoo Series?
It is a late-reign group of antoniniani that pair real or mythical creatures with deities invoked as protectors of Gallienus.
When was the Zoo Series struck?
The principal Rome series is conventionally dated around AD 267 to 268, near the end of Gallienus' reign.
What is an easy Zoo coin for a beginner?
Diana animal types are among the most frequently encountered and make an excellent starting point.
Is every Roman coin with an animal part of the Zoo Series?
No. The series is identified by its specific deity legends, CONS AVG formula, issue structure, and mint marks, not simply by an animal reverse.
Gallienus' Zoo coins are memorable because they are visually unusual, but their real interest lies in their structure. Each creature belongs within an appeal to divine protection, and the mint workshops help organize the series into something collectors can study rather than simply accumulate.
History wasn't just written. It was minted.
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