Great Britain 1971 Postal strike: EMERGENCY MAIL SERVICE, Rhodesia postal history 1971 complete with text AIR LETTER to Oxford, England with 2½c, 5c affixed for postage and additional 50c fee pmk'd CAUSEWAY 25 FEB 71 with circular EMERGENCY AIR SERVICE d/ring alongside. Writer mentions new service (inaugurated on or about the 20th February) for such airletters at a cost of 5/- or 50c cents local. Such letters were taken by private couriers. The UK postal workers strike was period January to March 1971. £75
AUTHORISED CONCESSIONAL RATE AIR MAIL, Rhodesia postal history 1960 opened-out printed AIR MAIL envelope with both oval Royal Coat-of-Arms on flap and "CODE No. 23-31." alongside to Foyles Book Shop, London with QE2 3d pmk'd Salisbury 28 DEC 60, red 5-line "Authorised for Transmission/by Air Mail at Concessional/Rate./U.K.S.L.S. (Army Element), Salisbury, Southern Rhodesia" handstamp. £75