Lot 50451 – Colombia – 1861 « Nueva Granada » 1p, master negative

Colombia – 1861 « Nueva Granada » 1p, master negative on film, showing black painted areas within and in the surround of the stamp design, such retouches made with the purpose of avoiding the light to diffuse laterally in the process of photographic reproduction. One of two matrices known for this Colombian issue, with no clichés or trial exposures present in the B.P.A. collection, the postal Museum in Paris, or the « Ultimate » collection.