Stampless cover to Xanthi [now, in Greece] with small single-circled “T” postage due marking in black, mailed open from Sofia, Bulgaria, and postmarked with bilingual ‘SOPHIA 6.II.920 СОФИЯ’ canceling-machine postmark.
On arrival at destination, a 25 st. Bulgarian Tzar Ferdinand engraved regular stamp (1911) plus 5+10+15 st. Tzar Boris III postage due litho stamps of Bulgaria, issued in 1919, were handstamped in 1920 with single-line “THRACE INTERALLIÉE” handstamp inverted diagonally (during the Allied Occupation of Western Thrace).
All four adhesives bear the local single-circled “T” postage due marking in purple, and were cancelled with ‘КСАНТИ 11.II.920 XANTHY’ date-stamp.
Given to the POSTE RESTANTE counter and backstamped on same day.
[Western Thrace was taken by the Kingdom of Bulgaria in October 1913. France occupied the area at the end of the First World War, following the defeat of Bulgaria. On 1 December 1919, the Inter-allied Administration was established in the area; this ended on 31/5/1920, being replaced by the Greek Administration on next day, 1 June 1920.]
Condition: Good; see scans.