cover 3Kr. dull blue (Plate 1) vertical pair with good to large margins showing dividing lines on all sides on neat 1851 envelope to Regensburg, lightly cancelled by cogwheel "146" (Sem D.M. 250) with "INNING 3/10" thimble c.d.s. of origin adjacent and arrival c.d.s. on reverse. Very fine and scarce. M.2 I. Sem D.M. 1800. Photo