Gents 1950s New Old Stock Prisma automatic wrist watch.The watch has a 21 jewel Swiss automatic movement, a Felca 1560, which is working nicely.The watch measures 33mm diameter excluding the winding crown and the lugs. The case is stainless steel and it is in super condition. The inside of the screw on case back has the brevet (patent) number 238872 which was for a 1945 patent in the name of John Simon, and related to a device for securing a watch movement in a case. John Simon was an ingenious inventor and pioneer of waterproofing watches during World War II. The back of this particular watch states that it is waterproof but, as with any vintage watches, it should be kept away from water and moisture.The lens looks good to the naked eye… light marking if viewed through a magnifying loupe, probably from the watch being in storage.The dial is signed Prisma, a brand name registered by several different companies. It is in beautiful condition with original dauphine sh...