A pair of glasses that belonged to John Lennon is going under the hammer. Lennon's 'Lost Weekend' glasses - the tinted prescription specs he wore during the 18-month period he spent in Los Angeles between 1973 and 1975 - are among the main items up for bidding at Propstore's Music Memorabilia Live Auction in London. This auction brings together some of the most significant pieces of music history, from stage-used guitars and handwritten lyrics to iconic wardrobe and personal artifacts. The glasses are one of the most recognisable personal items of Lennon memorabilia and are estimated to sell for between $198,000 and $396,000 (£148,000 and £297,000). "Never known as a violent person and more famous for his involvement with the peace movement, John Lennon's glasses came to market due to a scuffle with Tom Smothers at the Troubadour Club in Los Angeles," revealed Propstore's Mark Hochman. "After the incident, Smothers' wife collected the glasses, phoned her friends, and hosted a party where, apparently, guests were thrilled to wear John's trademark glasses. "There's full photographic documentation that shows Lennon entering the Troubadour on 12 March 1974, and leaving without them." Lennon's 'Lost Weekend' period came after he separated from his second wife, Yoko Ono, whom he married in 1969. The couple reunited and remained married until his death in 1980.