ROLEX SUBMARINER DATE "RED" MARK IV Reference : 1680. Serial number: 3405255. Steel case, graduated rotating bezel. Black dial, painted hour markers. Service hands. Automatic mechanical movement (calibre 1570). Folded Oyster strap on folding clasp, signed. Plexiglas glass. Circa 1973. Diameter: 40 mm. A stainless steel wristwatch automatic movement, by Rolex. Circa 1973.