375rd Heinrich Köhler auction - Day 1

Ferslew 4 rbs. brown, good margins, tied by target cancel to entire letter (invoice for sweets) from "VEILE 6 12 1851" to Christiansfeld, endorsed "Franco" in lower left, cancelled by pen strokes with adjacent red manuscript "ikke betalt (not paid) (signature of Brinch the postal clerk)", but not charged. A very fine and rare letter treated contrary to the postal regulations by the post office