Rolex Chronometer Contrôlée Officiellement A collection of 6 deck watches An extremely rare railroad watch - Class A Chronometer Observatory Quality - with original wooden box Movm. No. 5000617, Cal. 550, Case No. 1004282, Dimensions 52 mm, circa 1945, Weight 98 g, Origin Swiss Case: steel, "Snowhite", screw back with dedication engraving "The staff of the B.A. Brancil of the 'Northern' to Mr. R. P. Saunders, Oct. 1947". Dial: enamel, blue Arabic 24-hour numerals. Movm.: bridge movement, Observatory Quality Class A, lever escapement, screw compensation balance, index spring fine adjusting device. On the back is an engraving of a steam locomotive in a very elaborate design. Case: very good. Dial: very good. Movm.: very good, capable of running, cleaning recommended. Case: very good. Dial: very good. Movm.: very good, capable of running, cleaning recommended.