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Source:
Colnect
Issued by:
Grenada
Function:
postage
Date:
9/9
/
1987
Issue:
Great Scientific Discoveries
Denom:
$3
Color:
multicolored
Design:
James Watt
and Drawing of
steam engine
Watermark:
St Edwards crown & CA
Perf:
14
Catalog value:
Prev:
$2 d=Robert Boyle
Next:
$5 d=Voyager (1987 Grenada)
External links:
Colnect 455523..Watt-Inventors
