The 1878 Design Harlem Color Proof, for the Curacao 1.5 Guilder Issue on dull toned Vellum paper, imperforate without gum, slightly creased. This example has a Brown Frame and a Green Vignette and has been hinged previously with some hinge remnants. Rare and hard to find in any collection of Curacao. Reference: Van Dieten "Proeven Catalogus 1988". Very worthwhile for exhibiting.