07 July (Australia ) within release 100 Years of Commonwealth Management of Lighhouses goes into circulation Se-tenant 100 Years of Commonwealth Management of Lighhouses face value 4*70 Australian cent
Se-tenant 100 Years of Commonwealth Management of Lighhouses in catalogues | |
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Michel: | Mi:AU 4323-4326 |
Yvert et Tellier: | Yt:AU 4162-4165 |
Stanley Gibbons: | Sg:AU 4388a |
Se-tenant is vertical format.
Also in the issue 100 Years of Commonwealth Management of Lighhouses:
Se-tenant 100 Years of Commonwealth Management of Lighhouses it reflects the thematic directions:
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.