I have a multi-colored gold (10K RBG) s10 or S12 very thin pocket watch (1951) Swiss ELGIN. Other marks on movement are Elgin 916 17 Seventeen Jewel Adjusted. and elsewhere on movement YXY. Can't seem to find out value or anything else. Know that 3000 were made on this run (database search engine) but not much else. Only other thing of note is the DATE feature.