Bit of a long shot I suppose, but maybe Joerg or other Swiss expert can tell me what the maker's mark is on this spoon. Unfortunately only the lower half remains, looks to be JR or JK, in a shield. The coin is from pre-Napoleonic Geneva - RESPUBLIC GENEVENS on front, and POST TENEBRAS LUX on reverse. My guess is a Geneva maker added the handle in about 1860-1880.