2-18" with a silver luster rim. There is a .25" narrow sliver of metal missing from the rim at the very top although this shows little more than a hairline from the front and even from the side edge is only 1/16" deep. The reverse of the piece holds a standard spring pin and there is no maker. The slightly domed beautifully colored celluloid depicts a couple reclining on a riverbank and he has apparently just presented her with some flowers she is viewing. The celluloid is essentially Mint. A beautiful piece from the early 1900s.