cover 12 Kr. reddish lilac with good to large margins in combination with 1870 perf. 11½ 1Kr. light green (X) and 1Kr. light green (Y) on 1871 entire to Brussels, neatly cancelled by two strikes of the single ring "NURNBERG BHNF/28 JUL" c.d.s. with "P.D." h.s. (in blue) adjacent and showing arrival c.d.s. (29/7) on reverse; a horizontal filing crease is well away from adhesives. A very fine and exceptional mixed issue franking, particularly so as the 1Kr. values represent both watermark types. Signed Pfenninger. M.18 + 22X + 22Y. Sem D.M. 3500 +. Photo in colour