A Travelling Landau built by London coach maker Adams & Hooper in 1835 realised £247,900 ($374,806) at Bonhams on March 7.
It was designed for King William IV and would have been used for long distance travel.
It provided the headline lot of a major single owner collection of Victorian era carriages and coaches, selling to a northeast Asian buyer.
A spokesperson for the auction house told the Oxford Mail: "We were expecting an awful lot of people and they all turned up so it was a busy auction room. It really was the talking point of the carriage world.
"The carriage was fastidiously restored, it was just a fantastic item."
Rob Hubbard, Bonhams' motoring specialist, commented: "Today's Sale saw a packed auction room, 100% sold, international bidding, and many items soaring far above estimate to achieve over £1.1 million for the Sale.
"Utilizing our international client base and skilled team of specialists, we were able to achieve some great results.
"The first auction of its kind for Bonhams, it attracted attention from clients all across the globe, with bids coming in from Australia, Mexico, the US, Europe and the Far East."