Turkey Smyrna 1825.11.13: SMIRNE straight-line UNKNOWN postmark in black on entire folded letter in French "Smirne le 13.9bre.1825" sent to Toulon.
Unreported marking seems to be the only one known up to date. To pay "6" décimes, handwritten and disinfection with 2 vertical slits upon arrival in France, UNIQUE & VF

Receiver was Achille Guy Marie de Penfentenyo, Chevalier de Cheffontaine, Capitaine de vaisseau, Major de la Marine à Toulon.
The text concerns the purchase of two carpets.
The sender served in the warship Abeille "Abeille va mettre sous voile, j'en sues avert à l'instant et je ne luis vows écrire que deux lignes" and gave the letter to the civil post office, which seems to be a French Consular Post Office:

According Wolf Dinslage ("The History and Postal History of the town of Smyrna up to the end of the reek Period", page 153) "...a postal transmission office was attached to the French Consulate in Smyrna from 1 May 1712 to the end of 1813. A consular post office is believed to have existed from about the 1820, and this received the status of a regular post office from about the middle of 1835...