"Top sale honors at the 2014 RM Auctions Arizona auction went to the 1958 Ferrari 250 GT LWB California Spider, chassis 1055 GT with coachwork by Scaglietti, that sold for $8,800,000, making it the most valuable car sold in Arizona auction week history. Chassis 1055 GT is the 11th of 50 long-wheelbase California Spiders."

Text source: http://www.sportscardigest.com/rm-auctions-arizona-2014-auction-results/
Image source: https://www.rmauctions.com/lots/lot.cfm?lot_id=1064477