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Stamps of
Germany
,
Hermann von Helmholtz & diagram of eye
design
List
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Catalog
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Gallery
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All issuers
|| Edit
1 to 1 of 1
postage
1994
, Sep 8
Hermann von Helmholtz death 100th issue
unwmk
(no perf info)
-
100
multi
Hermann von Helmholtz
&
diagram of eye
1 to 1 of 1