c1945 cover sent registered to H.M.S. Eaglet, G.P.O. London, with a pairs of 9d and 6d M.E.F. stamps cancelled by red POST OFFICE MARITIME MAIL double ring cancellers with no date in the centre (wartime security measure) An M.M. 2 registration label is on the front of the cover. No other transit or arrival markings. An interesting and “striking” cover.