141211 1941 AIR MAIL LONDON TO TRINIDAD WITH KGVI 1S BISTRE-BROWN (SG475) X 4 AND 10S DARK BLUE (SG478).

1941 AIR MAIL LONDON TO TRINIDAD WITH KGVI 1S BISTRE-BROWN (SG475) X 4 AND 10S DARK BLUE (SG478). Envelope, 211 x 127mm, sent air mail London to 'Trinidad Petroleum Development Co Ltd, Siparia, Palo Seco, Trinidad, B.W.I.' with 1s bistre-brown (SG475) x 4 and fine 10s dark blue (SG478) with 'LONDON' date stamps 17th July 1941. On reverse 'PORT OF SPAIN/TRINIDAD' date stamp JY 28 41. Scarce usage of this 10s to Trinidad. (Ref 141211).