2c Carmine, Ty. V, Imperforate (533).
Block of four with horizontal guide line, huge margins all around with portions of seven adjoining stamps, cancelled by "Benton Harbor Mich. Sep. 29 '21 12:30 PM" duplex datestamp and grid, Extremely Fine Gem block, with 2012 P.S.E. certificate (Superb 98; blocks unpriced in SMQ)
Image Magnifier / Download
Power Search for Comparables