Antique Silver painted shell pendant

Beautifully detailed tiny intimate lacing panted shell set in solid silver. Makers Mark is a crown with Anna inside of it. Haven’t been able to find that stamp online. Beautiful iridescent shell with a matte painting overlay. It’s antique and gorgeous. The shell is loose in the setting but I have worn it for years and it has never come out. Could probably be easily fixed but I never felt a need. Price reflects this ✨