Arnold & Son GMT II Tourbillion

Ref. 1T1AW.S04A.C01B. Two 24h GMT sub-dials. Solar compass function. Quick GMT correctors. Mystery winding mechanism. Hand-winding movement. 110-hour power reserve. Diameter 41.50 mm. Water resistant to 100 feet (30 metres). White gold with black large-scale genuine crocodile strap.

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