Heinrich Köhler 384 Auction – Day 1 Single Lots: Europe and Colonies, Kingdom of Lombardy–Venetia – The "P.G." Collection

1861, folded letter, datelined St. Thomas, 28 September, to Carupano [Venezuela],  with oval “Gruner & Co” (forwarding agents) sender’s handstamp, ship endorsement at lower left, reverse with fine strike of large oval “ST. THOMAS / EXPRESS / OFFICE”, horizontal fold and small stain on back clear of postmark, a rare marking, with only seven examples recorded on mail originating in St. Thomas.