20 C. Postal stamp \"Merkur head\" violet purple, horizontal pair with overprint \"Occupied area North France\" in type II, reverse partial cancel of the Postmark \"Coudekerque business\" and signatur of the post office leader, impeccable mint never hinged, expertized Tust BPP and expertise Lothar Herbst VP (2023) : \"the condition is perfect. Due to the small issue from only approximate 80 - 100 pairs are these stamps very rare. \" Michel 2.500.- provenance: expertization collection Wolfgang Tust (compare 29. HBA auction 1997)