The Hamilton Model 23 Chronograph was used by all branches of the armed forces but predominantly used by the Air Force during WWII and into the 1950's Korean conflict. I believe production of the watches ran from 1943 to 1956 and around 23,000 were produced in total. The case is a silver plated base metal.
The front cover houses a thick bevelled mineral crystal and the cover screws on/off the main casing. The rear cover is also screw on/off. The engraved makers numbers on the reverse of the rear cover make it a replacement to the original as it is from a different specification of Hamilton military pocket watch, the covers being interchangeable. The bow is a good tight fit in the stem, the crown and plunger are in good condition. The case shows obvious signs of age with numerous minor scratches and scuff marks (mainly on the centre ring of the main case and rear cover).
The case measures 50mm across. The mineral crystal is in excellent condition. The original black dial is in good condition, a few very tiny marks when viewed with an eyepiece. The hands are in good original condition. The quality jewelled lever chronograph movement is in good clean condition and good working order, keeping very good time (has just run for 40 hours continuous from full wind).
The centre seconds'Stop watch' is in very good working order and records the elapsed minutes on the top subsidiary dial, always returning to zero on completion (press the top button once to start, again to stop and again to zero). The movement is marked 19 JEWELS HAMILTON, MODEL 23, ADJ. And the serial number is'P9421' (within the first half of production) engraved at the side of the balance cock. A rare watch in good working order.
The item "HAMILTON MODEL 23 MILITARY CHRONOGRAPH POCKET WATCH WWII GWO RARE" is in sale since Thursday, January 3, 2019. This item is in the category "Jewellery & Watches\Watches, Parts & Accessories\Pocket Watches".The seller is "mbuff46" and is located in Brough, East Yorkshire. This item can be shipped worldwide.