Cover canc. "ΚΩΝΣΤΑΝΤΙΝΟΥΠΟΛΙΣ ΤΟΥΡΚΙΑ*29.ΣΕΠΤΕΜ.1861" (two days before the circulation of the Greek stamps) to Athens. Handwritten "50", according to article "95/Sep 15, 1861", fr. on arrival with 10l+40l Paris issue stamps tied by "1" Athens cds and canc. "ΑΘΗΝΑΙ*2.ΟΚΤ.61" (2nd day of issue). Receivers name erased and a hole due to wax seal removal, still fine and very rare. An important cover connecting the pre-adhesive period with the stamps