Colnect-1414-558-overprint-on-Exterior-post-stamps-1901.jpg
Source: Colnect
Issued by: Turkey
Function: postage
Date: 1915
Issue: 1915c
Denom: 1pi
Overprint: 6point
Ovpt color: black
On: 1901 1pi issue=1901a
Color: violet blue
Design: tughra (1901 a)
Watermark: unwmk
Perf: 13.25
Catalog value:

In collections: unused (Stan Shebs)

External links:
Colnect 126907.._Crescent_Insi