Panerai. A Very Rare Stainless Steel Cushion-Shaped Diver's Wristwatch Signed Panerai, Radiomir, Ref. 3646, Case and Movement Signed Rolex, Case No. 1010091, Circa 1940Rolex Cal. 618 16''' mechanical movement, 17 jewels, the dial consisting of two discs, the lower one coated with "Luminor" luminous substance visible through the cut out Arabic and baton numerals in the black matte upper disc, luminous hands, large cushion-shaped water-resistant-type case, Brevet screw down crown, screw back engraved X.A. Flotmas, No. 048, case and movement signed Rolex, dial signed Panerai47.5mm diam.