Colnect-1414-566-overprint-on-External-post-stamps-1906.jpg
Source: Colnect
Issued by: Turkey
Function: postage
Date: 1915
Issue: 1915g discount
Denom: 2pi
Overprint: 6point
Ovpt color: black
On: 1906 2pi issue=1906 discount ovpt=B oc=blk on=1905-2pi-tughra (1905)
Color: slate
Design: tughra (1905)
Watermark: unwmk
Perf: 13.25
Catalog value:

In collections: unused (Stan Shebs)

External links:
Colnect 126925.._Crescent_Insi