137925 1951 REGISTERED AIR MAIL LONDON TO NEW YORK WITH KGVI 2/6 YELLOW-GREEN (SG509) X 2.

1951 REGISTERED AIR MAIL LONDON TO NEW YORK WITH KGVI 2/6 YELLOW-GREEN (SG509) X 2. 1951 KGVI 4½d carmine registered envelope sent air mail London to New York uprated with 2d pale red-brown (SG506) and 2/6 yellow-green (SG509) x 2 cancelled 'ST.JAMES'S ST' date stamps 3 MAY 52 and on reverse KGVI ½d pale orange (SG503) and 3d pale violet (SG490). Also on front US 'Post Office Department/OFFICIALLY SEALED' label in black and pre-cancelled US 10c red postage due presumably paying customs charge. Accompanied by GB 'CUSTOMS DECLARATION' form. (2 items). (Ref 137925).