For detailed information about each city’s assay mark and the table of dates each city uses – refer to one of the guidebooks suggested here.Also please note, this page only deals with English marks…not those from Scotland or Ireland.On the front of each link, which depicts a male figure, by the way, it also says tlaloc in block capital letters, clearly meant to be part of the design.) (submitted by Rosalie Isaacs, we don't know who Castelan was.
Dublin silver is struck with a crowned harp, to which a seated figure of Hibernia was added in 1731.
Encyclopedia of Silver Marks, Hallmarks Makers' Marks.
The silver markings guide to maker, town, assayer marks and hallmarks of antique and modern silver : English, American, Russian, Italian, French, German, Austrian.
Most British and Irish silver carries a number of stamps indicating not just the standard or purity mark (typically the lion passant) but also the initials of the maker, a date letter and the place of assay.
Since hallmarking began, the leopard’s head has been used in various forms to denote the London Assay Office.