Auction #94 WORLDWIDE AIR POST STAMPS AND POSTAL HISTORY

1892 (February 5), cover from the Pechenga Monastery (the northernmost Monastery in the World) posted into the mail at Kola (Administrative Center of Kolsky Peninsula, then Archangel Gub.), addressed to Petrovskaya Sloboda of Bogorodsk Zemstvo, franked by 7k blue, upon arrival (February 21) uprated by zemstvo stamp of 5k carmine red (Chuchin #56) paid for rural delivery, all appropriate markings, mostly VF and with high probability unique mailing, Est. $800-$1,000