STELRING SILVER 925...key wind....BEAUTIFUL! I couldnt find much about this one online. I believe the "F" mark stands for Fusee but please use your best judgement. It is marked in several places: -Back inside of case (Lion passant, Letter F, three figures in a shield, "017") -Top hoop or loop (Lion passant) -Ball crown (WS, Lion passant, and unreadable) Total width is 2" from side to side not including the crown. TOTAL WEIGHT: 124.7g! Includes key as seen in pictures. Condition: The key fits as it should. Time can be changed. The sterling case is in great shape with no dings or dents. Light scuffs and tarnish at most. Both the front and rear open nicely and snap shut. The glass crystal has no cracks or chips or even scuff marks. The porcelain dial has on edge chip. I fully wound the movement but didnt over wind it. It does run for a few seconds if it is lightly shaken. It may need some oiling before being fully functional. I WILL BE LISTING SEVERAL POCKET WATCHES, SOME GOLD AND SOME SILVER, FROM THIS SAME ESTATE SALE COLLECTION. PLEASE SEE MY OTHER LISTINGS. It will be protected well and insured. Location E1