Oil Field with Baku City Post Office Overprint

Overprint "Бакчинскаго Г.П.Т.О.№ 1" in purple. Overprint size: 31 mm.

Country:	Azerbaijan
Type:	Postage stamps
Series:	National Symbols - Overprints
Nominal:	3,000 ₽
Year:	1922
Material:	Yellowish
Perforation:	Imperforate