Ca. 25 × 40mm, silver, engine turned, multi-coloured enamelled, case number 63816, Swiss patent number 125267, British patent number 265886, case inside signed Rolex, patented opening mechanism, manual winding, original dial, luminous hands, in very good condition, intact. These Rolex travel watches/pocket watches are extremely rare. We are offering 3 different examples in our auction, all from the same collection. Here are 2 more of these watches that were offered at international auctions: 1. Milan 1992 (https:///go/AO3), 2. Hong Kong 2019 (https:///go/WXw).