De La Rue Progressive Head Dies 1878-1880, 2 Die Proofs in black with circular surround almost cleared on glazed cards (both 92 x 60 mm), undated ex. and dated May 5, 1876 ex., both fine to very fine. 

Charles Skipper & East tender essays 1879 (on the design for revenue stamps 1d. printed the word postage instead of inland revenue) in lilac, green, blue and orange-red all in bottom marginal blocks of four, very fine fresh group  

1d. Die Proofs (Die 1) in black on glazed card (3 ex.) undated (25 Apr 68), 2 June 1869 endorsed BEFORE STRIKING, Initialled at right and 22 July 1871 endorsed AFTER STRIKING, initialled at lower right, a fine group, cat.v. £ 1650 

1d. Die Proofs (Die 3) in black on glazed card (3 ex.) dated 22 Jul 1876, 4 Aug 1876 and 8 Aug 1876 endorsed BEFORE HARDENING and Date in M/S, a fine group, cat.v. £ 1650 

1d. Die Proof (Die 4) in black on glazed card dated July 12/78 and BEFORE HARDENING both in M/S and initialled at lower right, card a little bit aged, not mentioned in SG Specialised