Designed by LeCoultre in 1930, the Chronoflite was the first production clock offering "elapsed time". This particular version is the more rare, highly sought after 24 hour US Navy model that offered the Civil Date function while the Air Corps. preferred the less complicated model. This clock would have been produced from 1941-1945. Dial is 2 7/8'' across. The dials of these old instruments were painted with Radium paint, which remains intact to this day. This was a radioactive substance used during the time and very dangerous if exposed to frequent, direct contact. The clock's cover is intact, so there should be no issues whatsoever. What's impressive is the lume output is still very obvious. The Unfortunate: As opposed to most aircraft clocks, or any other watch for that matter, the A 10 winds backwards and has no safeguard for reversing the winder. Apparently it's not uncommon for the winding mechanism to have been broken inadvertently by those unfamiliar with this feature. This particular clock winds partially, and will run for a brief period. I'm told this is due to the winding teeth being damaged on the winding stem and ratchet wheel, which would corroborate with it's quirky "reverse" winding mechanism. In addition, the knob and stem are missing on the right side that operates the choron. The Fortunate: Already a very difficult instrument to find, the fact that it not only has military markings but is also in the rarest of configurations make this item particularly unique. During WWII, you would have found these clocks in the cockpit of a Douglas Dauntless, F4 Corsair, or F6 Hellcat, some of the finest birds the U.S. Military had to offer. Truly a piece of great historical significance, both in miilitaria and aviation memorabilia. Available for local pick up in Pittsburgh, Pennsylvania, U.S.A.. Otherwise, This item will be sent by registered mail. International Buyers – Please Note: * Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer’s responsibility. Please check with your country’s customs office to determine what these additional costs will be prior to bidding/buying. These charges are normally collected by the delivering freight (shipping) company or when you pick the item up – do not confuse them for additional shipping charges.