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Number by catalogue: Yvert: 4296 Scott: 3452
Perforation: Comb Perforation type: 12x12
Subject:
80 fens. The big chinese hydraulic wheel for irrigation. Sheeps
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Number by catalogue: Yvert: 4297 Scott: 3453
Perforation: Comb Perforation type: 12x12
Subject:
80 fens. The windmill using a strength of wind for pumping out of water polders*
Additional:
*A polder is a low-lying tract of land enclosed by embankments known as dikes, that forms an artificial hydrological entity, meaning it has no connection with outside water other than through man operated devices
Farm technology. Joint Issue with Netherlands
China, People's Republic of 2005.09.22
In issue: Stamp(s): 2
Issued in: sheets of 8 stamps