United Kingdom Tangier Centenary Overprint (Carrickfergus Castle)

British Postal Agencies in Morocco · 1957 · 6d

The stamp depicts Carrickfergus Castle in Northern Ireland, part of the 1955 Castle definitives series. It is overprinted with 'TANGIER' and a new denomination of 6d for use by British postal agencies.

This 1957 overprint commemorates the centenary of the British postal agency in Tangier, issued shortly before its closure. It represents the final chapter of British postal services in Morocco.