50 C. postal stamp, blue, vertical pair with left attached blank fields and over the stamps vertical overprint in type II, the stamps in perfect condition mint never hinged - reverse alike almost always with strike of the Postmark from "Coudekerque business" as authenticity marking, the lower blank field with affixed spots, only issued 1200 - 1500 Pare - with blank field only about 120 - 150 pairs possible - therefore especially rare, signed Brun amongst other things and certificate with photograph autumn VP (2014) : "the condition is perfect. ", Michel approximate 1. 400.-