cover -- 12Kr. lilac and 6Kr. pale blue, both with good even margins on neat 1868 envelope from Starnberg to England (20.8 arrival), lightly cancelled by a single strike of the open cogwheel "501" with half-circle origin d.s. (17.8) and boxed "P.D." (in red) adjacent; some imperfections including bleaching to reduce rust toning. Rare and highly appealing. Brettl Certificate (1986). M.18 + 16. Photo