1, 50 Fr. Postal stamp, blue, horizontal pair with overprint in type II, in perfect condition mint never hinged with reverse strike of the Postmark "Coudekerque business" and signatur of the post office leader as authenticity marking, issued only 80 - 100 pairs - very rare, expertized Tust BPP including and photo expertize autumn VP (2018) : "the condition is perfect. "