Heinrich Köhler 383rd Auction – Day 1 - Single Lots: Europe and Colonies, incl. Great Britain and British Commonwealth, Overseas countries

1870, folded letter datelined St. Thomas, 23 April, carried by French ship under the terms of the Anglo-French Postal Convention, postmarked with “St. Thomas Paq Fr B NO 1” c.d.s. (23 Apr), struck with oval “FR / 2F20c”, the only recorded example of this accountancy mark on mail from St. Thomas, red London split-ring arrival backstamp (10 May), an unusual example of unpaid mail to Great Britain carried via French packet; ex “Hogensborg”