2 Sgr. coat of arms, as a single franking on under-franked postal union cover, with two ring cancel "Cologne railway station 14 4 (1867) " together with on the stamp turning into box cancel of 2 lines "from the postbox" to Frankfurt / Main. The postage was for these shipment 3 Sgr., there over 20 miles distance. Besides the 1 Sgr. missing postage fell still 1 Sgr. criminal postage at, therefore samples from receiver 6 Kreuzer ( = 2 Sgr. ) to to pay. Left through the stamp walking vertical, smoothed letter crease - nevertheless an attractive document