Falkland Is SG141e 1935 Silver Jubilee 4d Double Flagstaff on Cover

1935 (7 May) envelope registered from Port Stanley to England bearing full set 4d. showing variety double flagstaff each cancelled by despatch c.d.s. A fine and rare First Day Cover. S.G. 141e (600 pounds as a used stamp). Christies November 1996.