Reference Guides
Long-form historical references for collectors. Each guide covers a ruler’s coinage in depth—history, attribution, market context, and the key types to know.
27 BC – 14 AD
Augustus Coins
A historical reference. The most politically calculated coinage in Roman history—794 types across 14 mints, from common Lugdunum denarii to gold aurei.
794 types
350 with images
~25 min read
306 – 337 AD
Constantine I Coins
A collector’s reference. 4,096 types across 17 mints—the most prolific coinage of late antiquity, from common folles to scarce gold solidi.
4,096 types
1,327 with images
~25 min read
More guides in progress. Browse the full catalog or identify a coin.