sentences:  Building on the work of Conder and a few other intermediary reference works, the definitive and exhaustive work on attributing Conder tokens used by modern collectors is that of Dalton and Hamer.Each token is identified based on one of four large geographic regions (England, Anglesey and Wales, Scotland, and Ireland), then further by county.Within the county of issue, each unique combination of obverse and reverse design is assigned a number (referred to as the D&H number), and variations in edge lettering are further differentiated by a lower case letter following the number designation.