Rolex: An early 1950's gold Oyster chronograph anti-magnetic triple calendar wristwatch, the silvered dial with outer-date ring and central date hand, raised gilt square hour marks, Arabic five minute divisions, subsidiary dials for running seconds, elapsed minutes and hours, apertures for day and month, sweep centre seconds operated by two round buttons in the band, the case with screw-down winder and screwed back with makers mark No. 6036, the signed movement jewelled to the centre and numbered under the gold balance 72C and further engraved ROW, the case numbered between the lugs 917818, with brown leather strap and gilt buckle