375rd Heinrich Köhler auction - Day 1

Ferslew plate II, 4 rbs. chocolate-brown in vertical pair, tied by target cancel to lettersheet from "KJØBENHAVN 19 6 1851" to Apenrade, endorsed "franco" in the lower left, contrary to regulations, thus the letter was regarded as unpaid and charged with addtional "4" rbs. (12 rbs double rate unpaid letter fee minus 8 rbs. value of postage stamps). Credit given for adhesives was only given for a short period from April 1st to July 24th 1851. Vertical file fold well off the franking and left side flap missing, otherwise fine and most attractive. This is the only recorded example of a double rate entire treated this way. Certificate Moeller BPP (2008)