Guernsey - Alderney 1971 Postal Strike cover to Pakistan bearing 1967 BAC One-Eleven 3d overprinted 'POSTAL STRIKE VIA PAKISTAN £6' cancelled with World Delivery postmark
Guernsey - Alderney 1971 Postal Strike cover to Pakistan bearing 1967 BAC One-Eleven 3d overprinted 'POSTAL STRIKE VIA PAKISTAN £6' cancelled with World Delivery postmark