Rolex, a gentleman's stainless steel wristwatch, circa 1940, ref. 2508, the three piece case with silvered dial, Arabic numerals, blued steel hands, subsidiary dials running seconds and minutes, 17 jewel Rolex chronograph valjoux movement, monometallic balance and overcoil balance spring, the case 45mm including lugs, on a black strap with Rolex buckle, in a Rolex case