Vintage 1950’s men’s Royce 17j Swiss Landeron 248 Chronograph wristwatch that runs great and keeps very good time. The top pusher starts the chronograph sweep hand. The bottom pusher stops the sweep hand. Push the bottom pusher a second time and it resets to 12 every time. The black dial is very nice but it missing lume on two of the number indicators. The crystal is also in very good condition. The rotating bezel clicks and turns easily as it should. The stainless steel case measures 38mm not including the crown and is in very good condition. It has a tan padded khaki band that is very comfortable. It is waterproof to 20ATM (660 ft) and is incabloc.