Doxa Synchron 40 Ref. 40.004.41, 1971Doxa Synchron 40 Ref. 40. 004. 41 Vintage Doxa Synchron 40 Ref. 40. 004. 41, a Swiss mens hand wound dress watch from around 1971. This example features a clean silver sunburst dial, applied baton hour markers, slim central hands, and a simple DOXA signature below 12 oclock. The watch is powered by the Synchron 40 manual wind movement and represents the elegant, restrained design language of Doxas Synchron era production from the late 1960s and early