Corpuscular radiation
- Catalog #
- 2970
- Year
- 1964
- Denomination
- 10k
- Color
- Purple, red, blue
- Artist
- Lesegri
- Printing method
- Intaglio
- Perforation
- Harrow 11½
- Issued
- 6,000,000
- Description
- Corpuscular radiation.
Postage stamps the same series: International year of the quiet sun
Radio telescope
- Catalog #
- 2968
- Year
- 1964
- Denomination
- 4k
- Color
- Black, orange, cherry
- Artist
- Lesegri
- Printing method
- Intaglio
- Perforation
- Harrow 11½
- Issued
- 6,000,000
The emblem of the International year of the quiet Sun
- Catalog #
- 2969
- Year
- 1964
- Denomination
- 6k
- Color
- Yellow-orange, red, blue
- Artist
- Lesegri
- Printing method
- Intaglio
- Perforation
- Harrow 11½
- Issued
- 6,000,000
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