WORLD FAMOUS HAMILTON MODEL 22 NON-GIMBALED  CHRONOMETER WATCH   CASE DIMENSIONS: 5 5/8" L x 4 3/4" W x 2" T   Weight: 1 lbs 11 oz Model 22 35 watch     2 3/4" D x 9/16" H              Weight:          11 oz Presented is a WW II HAMILTON Model 22, 35 size chronometer watch that was made in a non-gimbaled satin silvered metal case and with Mahogany wood protective deck case. It is recommended that this clock always be in a horizontal position for best time keeping results. First delivered to the Naval Observatory on June 7, 1942, only 9,780 of these watches were purchased by the Navy compared to the 13,531 gimbaled versions which were fitted to a three tier 6 inch square box. Both versions used the same Model 22 35 size movement. This much rarer chronometer watch was used as primary navigation timepieces on smaller size ships which included PT Boats, patrol craft, sub chasers, mine layers and ocean going tugboats. This one's movement is registered to the U.S. Navy Bu. Ships and is dated 1942. We have tested this watch against a quartz comparison time piece and its daily rate of change is infinitesimal. It runs for 56 hours. The engraving on the back of the case gives the part number, 37615 and the serial number, AF/45-D-1454.The 12 hour dial was silver white originally, but has developed a light cream hue with age and has some slight discoloration at the 11 O'clock position and also within and around the seconds dial. It reads HAMILTON LANCASTER, PA., U.S.A., 48 hour Up/Down Indicator at top, Seconds Bit Under.  The rear panel of the case unscrews, and there is a protective metal dust cover over the movement.Inside, the movement is engraved with the Maker's name,  Model 22 - 21 Jewel specifications, U.S. Navy, Bu. Ships - 1942, and down low to the right of the balance wheel, the movements serial number, 2F20658. CONDITION: As stated earlier, we tested this watch against a quartz comparison time piece and its daily rate of change is infinitesimal for eight days. It runs for 56 hours at one winding. The massive non-gimbaled watch was carried in a especially designed padded carrying case with an inner box with a round viewing window in the top which fit into a wood carrying case. The hinged top of the inner box is secured to the bottom with a rotating sliding hook with locking cam. The interior of the case was fitted with a padded green liner that was formed for the watch to fit securely in place. The case showed some age, handling marks, small scratches, and some loss of the green felt covering. Our shop refreshed the finish with a good cleaning and replaced the lower green covering. The result  is a case which meets the requirements for which it was designed, and looks good doing it. Marvin E. Whitney, the scholar and author of the definitive work on military clocks, says this about the Model 22 series on page 396 of his masterful work, "MILITARY TIMEPIECES". "These beautifully designed watches were truly remarkable timepieces, the performance of which was outstanding. The rates were very steady and well within the Navy's mean daily rate tolerance of 2.0 seconds. ......The vast majority of these watches equaled or exceeded the performance of many foreign made ship's (full size) chronometers."  This Model 22 is a fine running clock which should appeal to those seeking a historic chronometer of the WW II Era SPECIFICATIONS: The Hamilton Model 22 is a legendary watch, hurriedly designed when the USA was entering WWII, along with the far more complicated Model 21 marine chronometer; both are considered amongst the finest of their type. The 22 was even produced in the boxed-and-gimbaled format, as it was proven to be reliable enough to serve as a ship's primary timekeeper! The case is 70mm across, of plated and matted brass, and features a wonderful guarded crown and button to prevent inadvertent setting. Although the mainspring's power reserve is some 60 hours, and the dial indicates up to 48, it was intended that the watch would be wound each day at the same time for nearly perfect isochronisms. The enormous movement is fully adjusted and immaculately finished and striped. The elegant regulator uses a spring-loaded finger which traces the perimeter of a snail-cam.    Bezel off.  Dial with count down indicator, cream hue and slight aging   HAMILTON CHRONOMETER HISTORY: Hamilton Model 21 Marine Chronometers and Model 22 Deck Watches.   At the outbreak of W.W. II the United States Navy required a vast quantity of high quality chronometers. At that time the Navy had been using Ulysses Nardin timepieces as standard equipment with few if any being available in this country.  A request for bids was made by the War Office and the Hamilton Watch Company was the only firm able to meet the requirements by designing and producing an innovative marine chronometer in  a period of about 18 months.  Hamilton was able to produce the unit in sufficient numbers to meet U.S. wartime demand, and made 11,239 combined total of these chronometers during the War.  The model 21 and 22 are technically one of the great achievements in horology. The balance and hairspring assembly were a radical departure from traditional chronometer design and resulted in superior time keeping rates.  In addition, Hamilton also produced a 21 jewel lever escapement chronometer deck watch. A more detailed description of both the model 21 and 22 timepieces can be found in Marvin E. Whitney's book: "Military Timepieces" which is recommended reading for serious collectors. International buyers welcome,but inquire first. We have satisfied customers in Argentina, Australia, Austria, Belgium, Bermuda, British Virgin Islands, Canada, Chile, China, Czech Republic, Democratic Republic of Congo, Denmark, Estonia, England, France, Germany, Greece, Holland, Hong Kong, Hungary, Iceland, Indonesia, Ireland, Israel, Italy, Japan, Kuwait, Latvia, Luxembourg, Malaysia, Martinique, Mexico, New Zealand, Nigeria, Norway, Nova Scotia, Panama, Poland, Portugal, Puerto Rico, Romania, Russia, Saudi Arabia, Scotland, Singapore, Spain, St. Maarten, Sweden, Switzerland, Thailand, Turkey, United Arab Emirates, USVI and the Eastern Caribbean. WARRANTY: We guarantee that this clock will be working on arrival and that our description is entirely accurate or your money back. The only conditions are that an email authorization be obtained within three days, and that the instrument is returned in its original condition and packaging, and insured for its full value. Unfortunately, shipping charges are not included in this offer and are non-refundable unless we are at fault. This does not affect our policy on shipping damage which is discussed below. PACKAGING: We take great care in packaging our clocks for shipment which includes bubble wrap, placing in a box, and then placing in a larger box surrounded by impact absorbent material. However, we are not responsible, once it is turned over to the carrier. Full Value insurance is required. In the event of damage due to shipping we will assist you in all respects even to filing a claim in your behalf. ACCEPTED FORMS OF PAYMENT are Bank wire transfer, cashier's check, or personal check in which case the item will be held until cleared. Our prices are quoted net to seller, but credit cards may be accepted through PayPal for verified members by special arrangement. Copyright 2012 by Land And Sea Collection™. All Rights Reserved.