Seismograph (Turkey 1980)

Stamp, Seismograph, Turkey,

08 September (Turkey ) within release 7th World Conference on Earthquake Engineering, Istanbul. goes into circulation Stamp Seismograph face value 20 Turkish lira

Stamp Seismograph in catalogues
Michel: Mi:TR 2521
Stamp Number: Sn:TR 2150

Stamp is square format.

Also in the issue 7th World Conference on Earthquake Engineering, Istanbul.:

Data entry completed
53%
Stamp Seismograph in digits
Country: Turkey
Date: 1980-09-08
Perforation: line 13
Format: Stamp
Face Value: 20 Turkish lira
Print run: 450000