Description
1966 6D AIR LETTER REGISTERED MAIL EXETER TO USA WITH 'MOBILE POST OFFICE NO.3' CANCELLATION OF DEVON COUNTY SHOW. QEII 6d air letter sent registered mail Exeter to USA uprated with 3d Wilding and 1/6 Landscapes (SG692) cancelled fine strikes 'MOBILE POST OFFICE No.3' date stamps 19 MY 66. Cancellation applied at the Devon County Show held at Exeter 19th-21st May 1966. (Ref 129774).