Gene Wilder's costume from Willy Wonka & The Chocolate Factory is set to go under the hammer as part of a collection of memorabilia from the beloved 1971 movie.

Bosses at California auction house Profiles in History expect the purple velvet frock coat, wool and camelhair slacks, off-white shirt, purple and violet lame vest and satin bow tie to sell for up to $120,000 (£75,000).

Other highlights include the everlasting gobstopper given to actress Julie Dawn Cole, who played Veruca Salt, as a souvenir from the set, and the Golden Egg used by Cole in the I Want it Now musical number in the film.

The egg comes with a notarised copy of a letter from the actress, which reads in part, "The Filming of this scene and Veruca's demise was actually filmed on my 13th birthday. The egg was presented to me at the end of the day's shoot as a birthday present."

Also up for grabs at the July auction: Cole's screen used Golden Ticket, a prop Wonka Scrumdidlyumptious bar and an Oompa Loompa costume worn by one of the actors portraying the industrious Wonka factory workers.