I know that the abbreviation "SIL" is, and has been used on silver for a long time, but can anyone tell me where and when it might have been first used?
Hi, I recently brought 6 napkin brings as I believed them to be filigree silver, the problem I have is when I acid tested the cartouche on the front, it turned green. Now it's more than probable that this is not silver, but I was wondering if it may be a lower grade silver such as .835 (would .835 s...