Morocco Agencies 1925-36 British currency 2½d blue, Block Cypher watermark, type 8 overprint, SG58a.
A fine mint example with original gum.
A scarce stamp with the Type 8 overprint.
British stamps overprinted "MOROCCO AGENCIES" were primarily intended for use on parcels (and later, airmail correspondence), and were on sale at British PO's throughout Morocco including Tangier until 1937.