1966 Independence issue, a collection of archival material, comprising 10c. enlarged handpainted essay with lettering overlay; the set of four imperforate and affixed on separate Harrison and Sons presentation cards handstamped "APPROVED"; the set of four in imperforate sheets of fifty; the set of four head background proofs in sheets of fifty; black printing only, brown printing only and black and brown printing combined, all three in imperforate blocks of twenty; the sheets and blocks with varying degrees of gum staining. A rare and most unusual offering