1914 censored cover to Denmark with a G.B. 4d overprinted 40 Centimos, cancelled BRITISH POST OFFICE LARACHE SP 18 14. The cover has Officially Sealed labels resealing it after it was opened by the censor and a red manuscript ‘Opened under martial law’ written across the front. The back has British Post Office Tangier 21 SP 14 cancels tying the tape and Kjobenhavn 20 MR 16 arrival cancels. It is believed only four covers known with this marking.