90c Carmine & Black, Plate Proofs on Card, Plett Types 2 and 3 "Specimen" Blue Handstamped Overprints (122P4-S). Two, one with Ty. 2 overprint reading down, other Ty. 3 reading up, different shades of proofs, large margins, one with small surface scrape at right, still Very Fine, each of these is the only recorded example of its kind on the 90c 1869, in the late 1870's and early 1880's the Post Office Department responded to requests for samples by sending out some of the card proofs that were available, in four recorded instances the receiving country applied the "Specimen" handstamp (see Chronicle 227 for article by Michael Plett), ex Finkelburg, with 1999 P.F. certificates stating the "Specimen" overprints are privately applied, which predates Plett's research

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