20 October (Hong Kong ) within release Inauguration of Cross Harbor Tunnel goes into circulation Stamp Cross Harbor Tunnel Entrance face value 1 Hong Kong dollar
Stamp Cross Harbor Tunnel Entrance in catalogues | |
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Stamp Number: | Sn:HK 270 |
Stamp is square format.
Data entry completed
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Stamp Cross Harbor Tunnel Entrance in digits | |
Country: | Hong Kong |
Date: | 1972-10-20 |
Perforation: | 14¼ x 14¾ |
Emission: | Commemorative |
Format: | Stamp |
Face Value: | 1 Hong Kong dollar |
Stamp Cross Harbor Tunnel Entrance it reflects the thematic directions:
A tunnel is an underground or undersea passageway. It is dug through surrounding soil, earth or rock, or laid under water, and is usually completely enclosed except for the two portals common at each end, though there may be access and ventilation openings at various points along the length. A pipeline is not a tunnel,though some recent tunnels have used immersed tube construction techniques rather than traditional tunnel boring methods.