A 1958 Ferrari 250 GT LWB California Spider is valued at $7m-9m ahead of RM Auctions' January 16-17 sale in Phoenix, Arizona.
One of just 50 examples of the long-wheelbase California Spiders, this car (chassis 1055 GT) was the 11th to roll off the production line.
It won first in class at the SCCA 1962 Osceola Grand Prix in Geneva, Florida - the only event it was ever entered into.
Since that time, Dutch auto company Roelofs Engineering has rebuilt the Spider's engine and it has received a service by Ferrari's Newport Beach operation.
"The Cal Spider is amongst the most highly prized of all road-going Ferraris," explained Shelby Myers, managing director of RM Auctions.
"Produced in exceedingly low quantities, the long wheelbase covered headlight model, such as the one we have the pleasure of offering in Arizona, is arguably the most beautifully proportioned of all Ferrari Spiders.
"It radiates elegance and performance while encapsulating everything that open-air motoring is intended to be."
A 1930 Duesenberg Model J Convertible Coupe is another major lot, estimated at $2m-2.4m.
The convertible is one of only 25 built with the desirable "disappearing top", and has been mechanically restored - with the majority of the original paintwork still intact.
A rare Porsche RS 61 Spyder will also feature in the sale.
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