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Number by catalogue: Yvert: 2248 Scott: 1203
Perforation type: 14 ½x14 ½
Subject:
81 cents. 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
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Number by catalogue: Yvert: 2249 Scott: 1204
Perforation type: 14 ½x14 ½
Subject:
81 cents. The big chinese hydraulic wheel for irrigation
Additional:
Look also at the FDC of this issue
Farm technology. Joint Issue with China
Netherlands 2005.09.22
In issue: Stamp(s): 2
Issued in: sheets by pairs of 5 items