I have a giant silver Platter, it is 75 cm long and 45 cm wide the weight is more than 4000 grams! i Bought it in an impulse from a private owner, assuming it was sterling silver and payed a market conform price
I can identify the silversmith and his personal mark but it does not have a silver grade mark
the maker is Robert Linzeler, is it common for such a peace not to have a silver grade mark, or should i be worried it is not real silver?
I cant find anything of him making plate silver
i attached some photos