Arnold & Son Constant Force Tourbillon 1FCAR.B01A.C112R 18k Rose Gold TRUE BEAT Seconds LTD 28pc Retail $197,500 New * 2 Additional Rubber straps $ changing tool. A&S Warranty... New/ 100% Authentic, UW-comes the Box and Papers, as seen in photos. Swiss made crafted Arnold & Son Constant Force Tourbillon 1FCAR.B01A.C112R crafted polished finished 18k Rose Gold round shaped case measuring 46mm diameter. Fixed 18k Rose Gold bezel. Manual movement, power reserve up to ± 90hours. Displays a Anthracite Open dial with Dart shaped hour markers, Golden faceted hands, indexes minute track at outer rim. . Tourbillon, featuring a patented constant force device with 60-second tourbillion(at 4 o’clock and true beat seconds at 7 o’clock positions. Large Crown & Anchor crown. Scratch resistant Sapphire crystal, transparent caseback. A&S Hand-stitched Dark Brown bottier Alligator leather patina strap, Rose Gold Deployment Buckle & Additional after market BLK & RED Rubber Straps, with tool to change straps. Water resistant to 30m/99ft. Display signed " Arnold & Son ", Caseback inscribed & numbered, Movement signed…LTD 28 pieces... Movement... Mechanical manual winding Exclusive movement, A&S5119 - 39 jewels, a thickness of 6mm, operates at 3hz-21,600vph. Tourbillon, featuring a constant force device with 60-second tourbillion and true beat seconds. The NAC grey mainplate and the palladium-coated bridges are made of nickel-silver and hand-finished with polished edges and brushed surfaces, gold screw-down chatons, and bevelled and polished screw heads. The movement is almost perfectly symmetrical, and all the technical components are visible on the dial-side. The three-dimensional movement architecture is designed to echo the English tradition of marine chronometer construction. At the top, two visible mainspring barrels provide 90-hour power reserve..