1880 (July) specialised collection including a sheet from the archives (believed to be unique) bearing eighteen imperforate proofs of the 25b. printed in black on various coloured papers, annotated with further paper samples affixed above, other imperforate plate proofs (27) including blocks of four (6), also issued stamps including 15b. perf.13½ used block of four, 25b. used vertical rejoined pair imperforate between. M.55-56. (83)