100% Original large sterling silver case measuring 47mm excluding crown, 55mm including and 55mm lug to lug. Case back is signed 6BB/ 924-3306 Arrow logo 1337/81.
100% original dial in nice condition with nice aging & patina .
Large Arabic Numerals, blued Steel Hands, subsidiary second.
simply used their best complying stock movement, JLC actually designed a new caliber, Caliber 479 used exclusively in their Mark X watches.
The population of both IWC and Omega's military and standard watches housing Cal.
83(IWC) and 30T2 (Omega) movements respectively probably runs into the millions, JLC's Caliber 479 is believed to be closer to ONLY 10,000 !!!!
Screw-down crown, and thick mineral glass crystal, the watch is water resistant to 200 meters.An unique difference with the other Blancpain Fifty Fathoms is the lack of numerals on the bezel, setting it apart from the norm.Inner case back fully hallmarked & referenced with numbers matching those on the movement & museum archive paper.Case measures 35 mm (not including the crown) x 46 mm lug to lug x 12 mm thick.Military timepieces form an interesting part of the horological history, and are extremely in vogue at present.With a striking & significant red ANCHOR below , associating it to the IMPERIAL NAVY.