Swiss 16S keyd fusee #80910 pocket watch, nice clean gilt movement, mint porcelain enamel dial with roman numerals, gold steel hands, heavy silver swing out cup style case with engine turning and coin edge frame. This watch used a #4 sized key for both time set & winding. An impressive old key wind watch in excellent condition!
An appropriate winding and setting key (or keys) is included in the listed price for this item. Unless otherwise noted above, the key is not original to the watch.