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PHILATELIC PROBLEM SIX

Expansion of the Prosser progressive die proof inventory

Gregory Prosser created numerous engraved progressive essay and die proof Art Reproductions, but there is no complete inventory of his works.
Over forty are illustrated in B.N.A. Release 11, but there are most likely additional ones yet to be recorded.

Question 6 Prosser
(B.N.A. Release 11 – Prosser progressive die proof and essay Art Reproductions)

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