Congo #1135-1138 Endangered Animals 4v Imperf Proofs on Collective Sheet

Description

Congo
#1135-1138 Endangered Animals, Horned Animals 4v Imperf Proofs on 1v Collective Sheet with Notes on Reverse. Printed on Shiny Proof Paper. Denominations are different than the issued stamps (Issued 90fr, 90fr, 205fr, 300fr) Trivial crease across center of sheet not affecting the proofs. 4-6 exist. This type of pre production proof series seldom comes to market and is seldom available at such a reasonable price. (d58)(d3707)
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