cover 20pa. blue (perf. 9½x12), a rare horizontal strip of six and a single, affixed to 1871 triple rate registered letter against acknowledgement of receipt and neatly cancelled by four strikes of framed "NAPLACEN" h.s. of Karanovac, addressed to Cacak; the envelope affected by some staining and other imperfections, however an outstanding example of the very rare 140pa. rate. M.14IC. Photo

细节
cover 20pa. blue (perf. 9½x12), a rare horizontal strip of six and a single, affixed to 1871 triple rate registered letter against acknowledgement of receipt and neatly cancelled by four strikes of framed "NAPLACEN" h.s. of Karanovac, addressed to Cacak; the envelope affected by some staining and other imperfections, however an outstanding example of the very rare 140pa. rate. M.14IC. Photo