A stunning 10 carat gold filled Memovox "Jumbo" automatic alarm watch from Jaeger LeCoultre, dating to 1965, in excellent overall condition. The watch has an elegant extra large 10 carat gold filled case and an eye catching two tone dial, in great condition with a sweep seconds hand and an alarm arrow marker on the inner section. The watch houses the rugged cal. K815 automatic bumper movement which has just been oiled and adjusted by my watchmaker and is running strongly and keeping time with the alarm function working perfectly. The crowns match. A good quality Hirsch saddle leather strap has just been fitted and the crystal was replaced recently so this watch is ready to wear. It is signed in three places, on the dial, case, and movement.
Dial: two tone satin silver finish in great condition, signed “LeCoultre Memovox Automatic Swiss”. Applied gold coloured batons mark the hours and the hands are in good shape. The crystal is clean and clear. The dial has just been returned from professional restoration to a high standard, now looking as it did when new.
Case: 10 carat gold filled, in very good condition, measuring a just over 38 mm across, excluding the matching crowns and 45 mm in overall length. The inside of the rear cover is signed "LeCoultre". This watch has been carefully looked after over the years, showing the expected marks from use but absolutely no signs of abuse, dents or significant scratches that I could see to point out to you.
Movement: high grade 17 jewel automatic cal. K815 bumper movement, running strongly and keeping time. The watch is set by the lower crown and the alarm is wound and set by the upper crown. Both functions operate correctly. 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 up until the early 1950's. The bumper version of the Memovox continued until the late 1960's as until then Jaeger LeCoultre had not come up with a way of stopping a fully rotational rotor hitting the pin on the inside of the cover, against which the alarm mechanism hits to produce the clicking sound when the alarm is activated. 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. Older automatics are not as efficient as modern day mechanisms so the watch may, need manual winding from time to time in order to keep the power unit charged, depending on how much use and movement it receives when worn.
Strap: fitted with a new old stock Hirsch saddle leather strap which attached to the watch measures approximately 220 mm from buckle tip to last hole.