Thrace: 1919/1920, Inter Allied Administration (overprints on Bulgaria), extraor
Thrace
1919/1920, Inter Allied Administration (overprints on Bulgaria), extraordinary and deeply specialised collection of apprx. 600 stamps (incl. several multiples like blocks of four), collected chiefly in never hinged, showing a great range of specialities like imperfs, offset on reverse, inverted/double/...