cover 12Kr. yellow-green (fine) with 9Kr. yellow-brown (close in places) and 6Kr. light blue (fine) neatly placed on 1864 (c.) envelope from Straubing to Athens via Vienna and Trieste, cancelled by open cogwheel "508" and showing half circle origin d.s. (22/6) adjacent, with transit and arrival d.s. on reverse. Rare and highly appealing M.12 + 11 + 10. Photo