"Coinage of the Roman Republic Online (CRRO) harnesses Linked Open Data to provide links across digital projects in Roman numismatics and beyond. At its launch CRRO provides access to six online collections containing over 20,000 specimens of Republican coinage.
The description of coin types provided here is based on Michael Crawford's 1974 publication Roman Republican Coinage (RRC), which is still the primary typology used for the identification of Roman Republican coin types. Since its publication in 1974 there have been significant revisions to the dating of the series following the discovery of new hoards, but no attempt has been made to reflect these or make any other amendments to the published typology at this stage. The descriptions for these coins are based on the typology set out in RRC, but have been modified to meet the standards of the British Museum’s collection management system by Eleanor Ghey and Ian Leins. These were previously published in Ghey and Leins 2010, which forms an update to the 1910 catalogue of the collection by Grueber. Additional types not in the British Museum’s collection were added to this database by Richard Witschonke of the ANS."