Postal & Live Internet Auction 736 George Kotsis, Pre-adhesive Collection, Part IV

GREECE: Entire letter,"canc. ""ΑΘΗΝΑΙ*30.ΣΕΠΤ.61"" to Sparta. THIS IS THE LAST DAY BEFORE THE OFFICIAL INTRODUCTION OF THE STAMP IN GREEK POSTAL SYSTEM. No postage stamp was affixed because it was paid","postage marking ""30"" (lepta) on reverse. A very rare and important postal history document.