Montserrat - 1884 4d Victoria issue, a phenomenal group of 13 items, commencing with the two engraved copper plates for printing the denomination and the denomination plus the territory, "Four Pence" and "Montserrat", accompanied by two extremely rare die proofs on pelure paper and two essays on wove paper of the denomination only; the rest reproduces both tablets and comprises four die proofs on pelure paper and three essays on wove paper in red and black; unquestionably a unique lot including the sole known engraved copper plates, a very rare element in the production of Sperati and the key evidence that he also used the process of typography to make these reproductions (this was in fact unknown to the B.P.A.). (Image)