12 February (Sierra Leone ) within release Lighthouses and Dolphins (2024) goes into circulation Mini Sheet Lighthouses and Dolphins face value 6*23 Sierra Leonean leone
Mini Sheet Lighthouses and Dolphins in catalogues | |
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Colnect codes: | Col: SL 2024.02.12-212 |
Mini Sheet is square format.
Also in the issue Lighthouses and Dolphins (2024):
Mini Sheet Lighthouses and Dolphins it reflects the thematic directions:
A dolphin is an aquatic mammal within the infraorder Cetacea. Dolphin species belong to the families Delphinidae (the oceanic dolphins), Platanistidae (the Indian river dolphins), Iniidae (the New World river dolphins), Pontoporiidae (the brackish dolphins), and possibly extinct Lipotidae (baiji or Chinese river dolphin). There are 40 extant species named as dolphins.
A lighthouse is a tower, building, or other type of structure designed to emit light from a system of lamps and lenses, and to serve as a navigational aid for maritime pilots at sea or on inland waterways. Lighthouses mark dangerous coastlines, hazardous shoals, reefs, and safe entries to harbors, and can assist in aerial navigation. Once widely used, the number of operational lighthouses has declined due to the expense of maintenance and use of electronic navigational systems.