First edition 1864. Publisher's green cloth, very lightly bumped at corners a few tiny nicks in the cloth. Internally a few odd intermittent spots else a Fine copy. Frontis of the Difference Engine Fine and retaining the original tissue guard. Entirely original and unmolested, the bindings are in excellent condition. Provenance Bookplate of Thomas Sopwith MA FRS to pastedown. xii 496pp.