40 C. violet "Merkur" with horizontaly overprint in type I, still in the asset of the Publikums located French stamps without overprint bekamen the same overprint in type I at sight respectively letter posting at the post-office counter in Dunkirk, in perfect condition unused, provenance existing only a few unused pieces, extremely rare, signed Brun and certificate with photograph autumn VP (2014) : "the condition is perfect. ", Michel for ** 2. 500.-