Sweden. Foreign-related cover. Portugal. Letter dated in Gävle on 28.5.1807 sent to Lisbon. Postmark SUEDE p. le. B.G.D.4 / HAMBOURG 10 JUIN 1807 (Fe/Mü 567 / VdL 2588, rarity 8), used only during the period May–October 1870 by the Grand Duchy of Berg P.O. in Hamburg – allegedly one of only two recorded on Swedish mail. EXHIBITION item in superb quality. Ex. Gunnar Nilsson.
