Instructions
Go to the Zinn-Becker website home page and click the "English" link to see the site in English. Click the "Catalogues" link to see details about various Zinn-Becker products, including pewter cups; or click the "Contact" link to get contact information to call or email Zinn-Becker about a specific cup.
Call or email, or explore the websites of pewter collecting clubs -- both those that deal with European pewter and those that deal with American pewter. Even if you find a club that is unfamiliar with Zinn-Becker, a member may have contact details for someone who can answer your questions.
Contact antiques, auctions and gift or home product dealers who handle European or German manufactured pewter items and ask your questions. If you?re trying to find information about a specific Zinn-Becker cup, and have a picture of it, provide the picture to the dealer to help identify or estimate the cup's value.
Check online antique auctions or sales sites, such as eBay or Worthpoint, which feature Zinn-Becker pewter products to find information. For example, email some of the online sellers to see if one can answer your questions or recommend someone to help you.