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Posted: Fri Nov 23, 2007 8:30 am
by Doos
Hi,

Made by the firm Zilverstad in Schoonhoven, The Netherlands.
See also http://www.925-1000.com/forum/viewtopic ... zilverstad" onclick="window.open(this.href);return false;

The initials are for Zilverstad, the crown is to indicate that they have a royal status (given to some firms who exist more than 100 years) and the 90 is the standard of the silver layer.