essay Proof Revenue collection comprising 1935-40 (?) issue photo of the ruler, handpainted essay in brown and Chinese white, die proofs of the head and complete design (3) in brown, black and carmine, imperforate plate proof sheet of forty in carmine and the issued stamp; 1940-45 (?) issue sketch of the inscriptions, die proofs (4, one progressive) in carmine, imperforate plate proof sheet of forty in brown and sheet of four in orange