Non British/Irish marks
There is no comprehensive online or printed guide to pewter marks from across the whole world. Indeed, in many countries or regions, no one has yet researched old pewter marks, which means identifying them is very difficult. However the United States and a number of European countries have been well researched and there are books that will help you identify marks from those areas.
American pewterers used touch marks, quality marks and, occasionally, hallmarks that are broadly similar to those used by British pewterers. To identify them, try:
Pewter In America; Its makers and their marks by Ledlie I Laughlin, American Legacy Press 1981 (three volumes in one), ISBN 0 517 35063 7
As a general rule, in mainland Europe the marking of pewter was more tightly controlled by the local guilds than in Britain. The style of mark often identifies the town, and indeed often includes the emblem or arms of the town. Dates in such marks have nothing to do with the pewterer. They simply indicate the date of the relevant guild regulations, which in some instances may have been introduced 200 years earlier.
The following booklet does not itself contain marks but is a comprehensive list of all the principal source books for European marks, with analyses and comments. It can be purchased from the Society.
Books on European Pewter Marks by Jan Gadd, The Pewter Society 1999, ISBN 0 9508658 8 5