Austria (Offices in the Levant) 1780 Disinfected Forwarding Agent Letter Constantinople to France

Stampless folded letter, with contents datelined Constantinople, October 24, 1780, to Marseilles, France, with manuscript Forwarding Agent notation “recue à Constantinople le 30 8bre 1780 & acheminée le 2 9bre Henry David & Cie” and “Netto di fuora Sporca di dentro” disinfection notation on reverse, rarely seen in manuscript, French straight-line “D’AUSTRICHE” marking on front and ‘34’ (sols) due marking, the entire with discoloration consistent with disinfection in vinegar, exceptional quality, discussed and illustrated in “Die Osterreichische Post in der Levante”, page 96.