I am looking for direction in resources for identifying
hallmarks. I have a cameo pendant/pin which bears a mark on the
back of the bezel which I cannot identify. Perhaps someone out
there is knowledge about hallmarks and/or cameos specifically.
The mark is a circle with a small line extending from one side
with an inverted curved “v” on the end of the line. The other
side of the circle shows an inverted curved “v” touching the
edge of the circle. The frame/bezel is not otherwise marked,
however the lock for the pin is clearly stamped 10K.
Thank you for any help or direction forthcoming.