Rare U S A USA – 4c Brown, Imperforate, Schermack Ty. III – worth US.$.400,000 MyNation May 2, 2020 Private Perforation (314A). Pair, left stamp Mint N.H., right stamp barest trace of hinging, rich color, proof-like impression, beautiful centering between top and bottom coil margins, Schermack perfs just barely in at right Sold on 2009-09-22