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Catalogue information
LastDodo number
757727
Area
Stamps
Title
Formula
Face value
7
Country / area
Year
1971
Month
12
Day
01
Issue group
Order Number in Issue group
2
Usage
Type
Basic colour
Theme / topic
Geographical theme
Persons theme
Item subject
Formula for the conversion of nitrogen into oxygen by bombardment with alpha particles
Michel number
572
Yvert number
555
Scott number
488
Stanley Gibbons number
971
ACS number
Designer/Engraver
Printing office
Perforation type
Number of teeth per 20 mm
Watermark
Luminescence
Printing technique
Paper
Print run
Dimensions / diameter
40 x 25 mm
Details
