Gibson, William, and Bruce Sterling. The Difference Engine. New York: Bantam Books, 1991. ISBN: 0553070282. First US edition. Octavo, red cloth, gilt spine and edges, 429 p.; maps, 25 cm. Issued as A Bantam Spectra Book. Limited to 350 numbered copies signed by the author on the limitation leaf. Endpaper maps by Jeffery L. Ward. SYNOPSIS: A novel set in an aternate-world Victorian England where the Babbage Engine was really built and changed society. A fine copy in fine matching red cloth slipcase and tissue dustjacket as issued. $300.00.