For sale is a unique vintage Rolex from 1956 with two-tone case and special gold color zephyr dial with rare first depth markings (50m=165ft) - The case is slightly larger then typical for that area, measuring diameter of 35mm without the crown - Case include solid gold bezel and gold crown - The Dial includes a rare early/first depth marking 50m=165ft below the “Rolex” markings - original movement cal 1030 in good working condition - aftermarket leather new bracelet The watch is in overall good working and cosmetic condition but I can not guarantee accuracy due to age and service time unknown.