5c Blue on Blue, Die 126(B), Error of Paper, Cut Square (U418c; UPSS 2004). Unused, 41 x 42mm, rich colors, Very Fine and very rare, this is only known as a cut square or full corner, we have offered only one other example since keeping computerized records, in our 2007 "Saddleback" sale, with 2001 P.F. certificate

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