1957 UNPAID MAIL NIGERIA TO SOUTHPORT. UK "BUSINESS REPLY ENVELOPE" incorrectly used Nigeria to Southport with postage unpaid and cancelled KANO/POST OFFICE/28 NO 1957. Envelope surcharged with "5/TO PAY POSTED UNPAID" hand stamp and 5d postage due cancelled SOUTHPORT/LANCS 2 JA 58. Unusual usage. (Ref 108104).