Silverstone Auctions is to offer a Bentley Mulsanne made for the Queen's 2012 jubilee tour of the UK.
The lot is expected to make around £215,000-235,000 ($267,180-292,034) on November 12-13.
It's one of a series of cars owned by royals and other notable people that will star as the Jewels in the Crown Collection at the NEC Classic Motor Show Sale 2016 in Birmingham, UK.
The Mulsanne was outfitted especially for the Queen, with bulletproof glass, flashing lights and Kevlar-reinforced tyres. The luxurious interior features walnut burr trim inlaid with royal crests.
It's painted in Barnato green, a shade named after the early 20th century British racing driver Joel Woolf Barnato.
Barnato was one of the famous "Bentley Boys" of the 1920s, a collective of wealthy young men who drove the marque to victory across Europe.
A 2005 Rolls-Royce Phantom that once belonged to Elton John is also on offer, with a valuation of £135,000-155,000 ($167,764-192,618).
It was the car he used to attend his civil partnership ceremony to David Furnish in December 2005.
The collection includes cars from other figures such as Princess Diana, Michael Winner and Will Young.
Nick Whale, managing director of Silverstone Auctions, told the Telegraph newspaper: "It's an honour to offer cars with such amazing provenance, cars that belonged to HM The Queen, as well as being owned by some of the most influential personalities of the 20th century.
"We anticipate a huge amount of interest from across the globe. These cars have been wonderfully cared for over their lifetimes and we look forward to finding them new homes."
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