Granite Seen Through Microscope (Rhodesia 1971)

30 August (Rhodesia ) within release Granite '71 Symposium goes into circulation Stamp Granite Seen Through Microscope face value 15 Rhodesian cent

Stamp Granite Seen Through Microscope in catalogues
Michel:	Mi:RH 116
Stanley Gibbons:	Sg:RH 467
Stamp Number:	Sn:RH 312

Stamp is square format.

Also in the issue Granite '71 Symposium:

• Stamp - Porphyritic Granite face value 2½;
• Stamp - Muscovite Mica Seen Through Microscope face value 7½;
• Stamp - Granite Seen Through Microscope face value 15;
• Stamp - Geological Map of Rhodesia face value 25;