Bulgaria. (British Forces In Bulgaria). 1918. Stamp-less picture post card of 'Le Port au Danube, Roustchouck' written from Rustchuk date '19th Dec 18' addressed to London endorsed 'On Active Service' cancelled by 'Field Post Office/T 26' double ring 20 Dec 18' with framed 'Passed by Censor/ No 157' in black on face.
Field Post Office T. 26 assigned to Rustchuk, Bulgaria (17.11.18) - (31.12.18) not seen by Proud in 'History of British Army Postal Service.