26 August (United States of America ) within release Coral Reefs Issue goes into circulation Se-tenant Corals face value 4*15 United States cent
Se-tenant Corals in catalogues | |
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Michel: | Mi:US 1434-1437 |
Stamp Number: | Sn:US 1830a |
Se-tenant is square format.
Also in the issue Coral Reefs Issue:
Data entry completed
50%
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Se-tenant Corals in digits | |
Country: | United States of America |
Date: | 1980-08-26 |
Perforation: | 11 |
Emission: | Commemorative |
Format: | Se-tenant |
Face Value: | 4*15 United States cent |
Se-tenant Corals it reflects the thematic directions:
A coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate. Most coral reefs are built from stony corals, whose polyps cluster in groups.