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Great Britain

postage

2010, Feb 25 The Royal Society 350 Years issue unwmk p. 14.5

-

1st

multi

Robert Boyle

Grenada

1987, Sep 9 Great Scientific Discoveries issue wmk. St Edwards crown & CA p. 14

-

$2

multi

Robert Boyle

Marshall Islands

2012, Apr 23 Great Scientists of the World issue unwmk (no perf info)

-

45c

multi

Robert Boyle

1 to 3 of 3