Agramer overprint, admission stamp rouletted, from right margin of sheet, overprint "island post" in blue black from plate I / 1, mint never hinged, very fresh piece of this rarest type the Agramer overprints, apart from an at of the lower left corner not perfect divided roulette in perfect condition, photo expertize Petry BPP: "the blue-black Argramer overprint belongs to the rarest manifestations the second general issue, from which to this day hardly fifty examples have become known. ", Michel unrealistic! One of the few bargains, these stamp in mint never hinged condition to buy!