I can’t say I’ve seen this model (circa 1957) of a Jaeger LeCoultre until now. The case is heavy solid 18k. gold with a screw back measuring 34.75x39mm. The dial was restored and retain the original Dauphine hands. What a unique case style! The very fine caliber 812 automatic JLC bumper movement was just cleaned and is accurate. The case has NEVER been polished and retains its original minor battle marks. What a cool, interesting and uncommon watch!