1779 (Dec. 28) London, England to Nantes, France, datelined folded letter with green "D'A / B" (D'Angleterre par Bruxelles) handstamp applied in Bruxelles, manuscript "28" sols due rating for London-Paris 20s plus Paris-Nantes 8s, charged as though went directly to France, Very Fine, ex-Barry Jay. Estimate  $500 - 750. Between 1775 and 1783, the thirteen British colonies on the eastern seaboard of North America were in conflict with their parent country, Great Britain. In February 1778, France entered into a Treaty of Alliance with the United States and in June 1779, the post between England and France cease, not commencing until Mar. 14th 1783. The G.P.O. announced this on Jun. 28th 1779.An arrangement was made between the French post and that of Tour & Taxis for letters between Great Britain and France to travel via Brussels and Valenciennes. Letters from England to France received the distinctive D'A / B (D'Angleterre par Bruxelles) handstamp in Brussels recorded as used 1779-1780. $0 (Image)