A stainless steel Heuer chronograph reference 333. This is a great looking and very rare example of an early 1940's military chronograph with two large sub dials presented in excellent, very honest condition.  The black glossy dial has a clearly marked, silvered, sixty seconds track, skirted by a base 1000 telemeter scale.  An important tool for military purposes.  By means of the telemeter scale it is possible to measure the distance of a phenomenon which is both visible and audible. The chronograph hand is released at the instant the phenomenon is seen; it is stopped when the sound is heard, and its position on the scale shows at a glance the distance in kilometers or miles separating the phenomenon from the observer.  (Calibration is based on the speed at which sound travels through the air, viz, approximately 340 meters or 1,115 feet per second ). The early silver Heuer shield logo pops from the black dial.  All of the luminous material is perfect and in tact in each number, and fully in tact in the wide syringe hands. These hands, again, were an important function for a military watch when being used for operations at night, along with the application of white paint to the tip of the seconds sweep hand.  The watch is powered by the more unusual Landeron calibre 13 manual wind movement.  A further rarity for this movement for a Heuer watch is that the bridge is stamped 'Heuer' and has a movement serial number.  More often than not, at this time, they were not branded.  The inside of the case is also marked 'Heuer' and has an early serial number starting 51XXX.  This dates the watch to the early part of the 1940's.  This reference is different from the 345 and 347 which had larger, more rounded lugs, and the three-register 2447.  This, very wearable size case, has straight lugs, and has only been seen with a two-register configuration.  It is more commonly powered by the Valjoux 22.  The case has signs of very light signs of polishing, the snap case back especially.  This may have possibly been to take out the German military inscriptions that would have, more than likely, been engraved into it.  However, the lugs are still sharp and retain an attractive bevel when viewing the watch straight on.  A chance to earn a rare piece of Heuer history, a brand which is growing in  collectibility rapidly.