50c Mortgage, Imperforate (R59a). Block of 20, large margins to clear, on piece, Dec. 1, 1862 manuscript cancels, few creases causing some paper splitting, otherwise Fine-Very Fine, this is the largest recorded multiple, the next largest is a block of ten, ex Cunliffe, Scott Retail as blocks of four $1,800.00
Robert Siegel Auction Galleries, Dec 2014, Sale 1089, Lot 346
o U.S.; Revenues, 1862-71 First Issue, 50¢ Mortgage, Perfed, Scott #R59. Study group of 19 items incl. silk, thin and thick papers, part perf 2 pairs and strip of 3, perf plate scratches, etc., interesting, generally Fine. Estimate price $100-150.
Harmer-Schau Auction Galleries, Aug 2012, Sale 94, Lot 1938