Scarce 1940s BOY’S SIZE Mid-Size Wristwatch. Otto Graef Ordnance watch for the military personel during WW2, might be for German Army. Movement markings: Memo Fab. Suisse, 15 jewels, Swiss, 16 2243. It is manual wind. Base metal case with chrome plating, wear and scratches. Stainless Steel screwback, marked inside Mimo W. Stainless Steel Back 304869 No personal markings on back. 30.5 mm wide x 37.7 mm tall x 11 mm thick. Original 24H military black dial has some patina. Marked “BOMBARDIER, WATERTIGHT” Original hands & red sweep second. Newer lume inside minute hands. Arabic numbers seems to have their original lume. Acrylic crystal has several scratches, shoudl be replaced I guess. Estate find, service history unknown. We work very hard to describe our items at the best of our knowledge, ask any questions if you are not sure.