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Number by catalogue: Michel: 429 Yvert: 442
Perforation type: 13 ½x13 ½
Subject:
90 rappens. Manufacturing of bricks from natural materials, mountain with a wind farm
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Number by catalogue: Michel: 430 Yvert: 443
Perforation type: 13 ½x13 ½
Subject:
90 rappens. Factory under a glass bulb.
At the left above - continuation of a wind farm from the previous stamp
Climatic changes
United Nations. Geneve 2001.11.16
In issue: Stamp(s): 4
Printing: offset
Issued in: sheets of 24 stamps (6 strips-series with general design)