NW19 Gansu overprint on unit issue

Issued sometime in September 1949, in the Gansu - Ningxia - Qinghai region of North West Liberated Areas. Listed as SG #NW62-4 Scott #4L45-7 Yang #NW69-71. Price mint 90, used 100

On 06/09/2021 this set realised 55.78 USD mint.

On 03/01/2021 this set realised 53.5 EUR mint.

On 15/03/2019 this set realised 51.7 GBP used.

Collected	AM	Catalogue Numbers	Face	Colour/Design	Mint	Used	Sale
	view	SG06:NW62,Scott03:4L45,Yang98:NW69		black opt. on Ordinary orange	26	28	none
	view	SG06:NW63,Scott03:4L46,Yang98:NW70		black opt. on Express pink	32	36	none
	view	SG06:NW64,Scott03:4L47,Yang98:NW71		black opt. on Registered red	32	36	none