The Case of the Mukkinese Battle-Horn (also known as Gone Goon) is a 1956 British short comedy second feature ('B')[2] film directed by Joseph Sterling and starring Peter Sellers, Spike Milligan and Dick Emery.

[4][5] Supposedly filmed in "Schizophrenoscope" ("the New Split-Screen"), it concerns Superintendent Quilt of Scotland Yard's attempts to retrieve a "Mukkinese Battle-Horn'" stolen from a London museum.

The budget of £4,500 was raised from Archway Film Distributors (£1,500); Peter Weingreen, who worked with Michael Deeley and Harry Booth on The Adventures of Robin Hood (£1,500); and Joseph Sterling, who wanted to direct (£1,500).

[1] Kine Weekly wrote: "Its players work hard, but its humour, pretty crude, is mainly addressed to the lowbrows.

The theft of the eponymous instrument is of virtually no significance other than to give Peter Sellers the opportunity to play three characters.