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Number by catalogue: Michel: 686 Yvert: 668 Scott: 864
Perforation type: 12 ¾x12 ¾
Subject:
70 ore. Hydraulic power and energy
Swedish trade and Industry
Sweden 1970.09.28
In issue: Stamp(s): 6 Booklet(s): 1
Printing: engraving
Issued in: booklets of 6 stamps as one set