A Jaeger LeCoultre "Powermatic" automatic “bumper” vintage gents watch with a power reserve indicator on the dial, manufactured in 1955. The Powermatic is rarely seen in the UK and is highly collectible. This watch is 10 carat gold filled and is slightly larger than most Powermatic models with a 35 mm case instead of the normal 34 mm. The watch is in original un-restored condition with a beautiful factory original dial which has aged evenly and gently over the years, resulting in a lovely patina that it is almost impossible to emulate by any restoration. The case presents very well indeed ant the movement runs strongly and keeps time. The power indicator on the dial shows 40 hours running time when the power unit is fully charged and it runs down into the red when the watch is unwound. A bumper movement is an early automatic movement which has a rotor to wind the watch which moves back and forth, hitting stops rather than turning continuously through 360 degrees. When you shake the watch you can feel the bumper mechanism operating but the action is normally not noticed when the watch is worn. The watch is signed in three places, on the dial, case and movement.
Dial: factory original with an outer minutes chapter and a power reserve indicator located just under the
Case: 10 carat gold filled, in very good condition, measuring approximately 35 mm across, excluding the crown and 43 mm in overall length. The inside of the screw back cover is signed LeCoultre and hallmarked as 10K gold filled. The case is showing the expected signs of use over the years but absolutely no signs of abuse, dents, scratches or obvious signs of brassing that I could see to point out to you.
Movement: high grade cal. 48 17 jewel automatic bumper movement, signed “LeCoultre Co Automatic”. It is running well and keeping time. The bumper unit is an early automatic movement which was first seen in watches in the late 1940's, with many LeCoultre and Omega watches housing them during the early 1950's. Unlike the modern rotors, which sit on top of the mechanism and rotate through 360 degrees, the bumper mechanism rotates through a little over 300 degrees, hits a stop and then bounces back and forth with a hammer action. If you look at the photograph of the movement you will see the springs which cushion the impact of the hammer action and send the rotor back over to the other side of the movement. As with most automatic watch mechanisms (the Futurematic is one exception), the movement can be hand wound. It should be "kick started" when first used by manually winding the watch. When it is fully wound the power indicator will go out of the red and show a 40 hour charge. As older automatics are not quite as efficient as modern day mechanisms, the watch may, need manual winding from time to time depending on how much use and movement it receives when worn in order to keep the power unit charged.
Strap: fitted with a Hirsch leather Ostrich grain strap measuring with the watch fitted, approximately 215 mm from buckle tip to last hole.