I have looked and looked, the best I could find is that Karl Weiden used a Czech silversmith on some of his pieces. I could not find information on the hallmark anywhere therefore here I am seeking your help.
Hello, the company was active until 1988. Franz made a lot for export, especially after 1945 he often used just a 925 / sterling mark which made it easier to sell the objects to other countries. Regards, Bahner
Thank you for your speedy and informative response, it is a fantastic learning experience for me, such knowledgeable and gracious people on this forum.
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