Proof 1904-20 ½a. die proofs (3) in black, two with the heads excised and replaced with heads in carmine and violet, all with 15-30mm. margins; ½a. die proof in chestnut with head excised, 4-25mm. margins; 1a. imperforate plate proofs in red-brown and in green (strip of three and a pair; 3a. die proof in black with 20-25mm. margins; also 1a. issued stamp mint pair with black mourning borders printed on gum. An interesting group