essay Proof 1866 "WEST INDIA" 4a. essay block of four in green and a single in lake; 1895 2r. colour trials (5 different, four each with one defective corner and one thinned); 1906 4a. imperforate plate proof marginal pair in black on cream card, and 1925 Delhi essays comprising 2a. (3) and 1r. (3) in various colours