Lot 6101 373rd. Heinrich Köhler Auction - 6101

1861, Side-wheeler steamboat black, close to margins all around, tied by cork and by blue "Prince's Express 9 Milk St." in serrated oval to postal stationery envelope 3 cent pink to Hinsdale N.H., cds. "Boston Mass. Jun. 23 5 A.M." alongside, original June 21, 1869 datelined letter from Portland included, overall soiling. Fine appearance and the only recorded example of this rare stamp used on U.S. postal stationery, certificate PF (1982) (Scott# 122L1, U58) Provenance: Gordon Stimmell Collection (Siegel Auctions 2015)