1937 PARCEL TAG SEAHORSES 5S (SG451) AND 10S (SG452) X 3. Unaddressed parcel tag inscribed "LETTERS" at top and with Seahorse issue 5s (SG451) and 10s (SG452) x 3, one with corner fault otherwise fine, cancelled neat LONDON date stamps 27 MY 37. On reverse photogravure issue 4d (SG445) corner fault and 1s (SG449) with same cancels. Attractive usage. (Ref 104937).