Los-Nr. 6221

"35" Postage due charge mark on unpaid small cover without contents sent from Finland July 31st 1868 to Stockholm and later readdressed to Tromsö (Norway). According to the Russian/Swedish convention in force from July 1st 1868 the prepaid single rate in Sweden was 28 öre, but it was 35 öre when charged to the addressee. This is one of a very few postage due covers known to have been readdressed to another country.