Movement is 40.25 mm. This movement Cal 17, Two-train with lever escapement, jewelled to the center, two polished steel hammers repeating on colled gongs, The Trip-Train mechanism with tandem wind. Swiss Patent CH18710 Only 54 Trip train minute repeaters have been identified in the market until today.The item "Patek Philippe Minute Repeater Pocket Watch Movements" is in sale since Friday, December 08, 2017. This item is in the category "Jewelry & Watches\Watches, Parts & Accessories\Pocket Watches\Antique". The seller is "movementking" and is located in Roscoe, New York. This item can be shipped to United States.