一套3只機芯模型及1只Alpina懷錶 一座罕見法國擺鐘內的鏤空擒縱機芯，210 mm，約 1860 A collection of 3 escapement models and an Alpina pocket watch A rare skeletonized escapement model of a French pendulum clock movement, 210 mm, circa 1860#43821
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