It's the final frontier as Mr Spock's ears are put on sale for £2,000

A pair of pointy, fake ears worn by Mr Spock in one of the Star Trek films is among dozens of strange and famous stage and screen props and souvenirs to be sold at auction next month.

Sotheby's in London is expecting prices of up to £35,000 (for 240 pictures from a John Lennon art project) in the sale, which will include film props, gold discs, letters and photographs from pop music and Hollywood films.

Among the memorabilia are two swords and a pickaxe used by Mel Gibson in Braveheart, with an estimate of between £4,000 and £6,000. Two costumes from the film, an English nobleman's tunic and a kilt, are expected to fetch about £1,000.

Aheadpiece used by Michael Keaton in the 1989 Batman film is estimated to sell for up to £2,000.

From last year's Harry Potter and the Philosopher's Stone is an acceptance letter from Hogwarts School of Witchcraft and Wizardry, which comes with an envelope addressed in green ink to "Mr H Potter, The Cupboard under the Stairs, 4 Privet Drive, Little Whinging, Surrey". The estimate is about £5,000.

Sixties pop memorabilia features prominently, with many lots associated with the Beatles. An original print and negative of the first photograph of John Lennon and Paul McCartney, on stage at the Casbah Club in Liverpool with their band the Quarrymen in 1959, is estimated at £8,000.

As well as the artwork project with Lennon, by the artist and film maker Stephen Verona, there is a wristwatch from the Beatles' Apple label and gold cufflinks belonging to Lennon in the shape of his initials. A series of unpublished photographs of the Rolling Stones' free concert in Hyde Park in 1969 shows Mick Jagger wearing what resembles a white frilly dress.

The most unusual lots are from films. Among the most expensive, at £15,000, is a replica Walther PPK pistol used in several Bond films. Sotheby's says the Japanese-made gun, sold in a red velvet case with letters of authenticity, was used "in the Roger Moore era". Moore's successor, Timothy Dalton, also fired the weapon in The Living Daylights and it was in the title sequence of For Your Eyes Only.

A Thompson sub-machine gun used in The Untouchables, the 1987 Kevin Costner gangster movie, is expected to fetch about £1,000 in the sale on 3 December.

And the Spock ears? Made of moulded and painted foam with an estimate of £2,000, they have a certificate of authenticity from Leonard Nimoy, who played the half-Vulcan. He writes: "This is to certify that these ears were worn in the role of Mr Spock in Star Trek VI in Los Angeles, California, 1991."