Lot 20277 – 1895 20 pen blue, perf. 12 ½, mint strip of 4 with imperforate vertically variety

1895 20 pen blue, perf. 12 ½, mint strip of 4 with imperforate vertically variety, with some browning to back, Facit lists the horizontally imperforate (16, perf. 12 ½, v6); probably derived from printers’ waste, but still very scarce; three very fine stamps and right stamp with a small thin spot.