12e general conference of the U.I.C.N. in Kinshasa, 1975
U.I.C.N. “Union
Internationale pour la Conservation de la Nature et de ses Ressources”
Date of issue: 10 September 1975
Expiration date:
Design:
Printer: Hélio
Courvoisier, s.a., La Chaux De Fonds, Switzerland
Paper with silk threads
Perforation: 11.5
Size: 22.5 x 37.5 mm
Sheet:
Marginal inscriptions: on the top and bottom: “Impression Courvoisier S.A., La Chaux-De-Fonds (Suisse)”. In the colors of the stamps
Circulation: 100,000
No 870. 1k, light green
No 871. 2k, blue
No 872. 3k, orange
No 873. 4k, red
No 874. 5k, green
The series:
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The imperforated series is in size and coloring exact the same as above:
Remark: the white border around these stamps is much larger when cut from a side, top, bottom or corner of a sheet.
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There are no variations or curiosities known for any of the above shown material.