A 1973 Ferrari 365GTS/4 Daytona Spyder is among the lead lots at Bonhams' Quail Lodge auction in Carmel, California on August 15.
The lot (valued at $2.6m-3.2m) is one of the particularly desirable convertible models, only 123 of which were produced, and features just 3,400 miles on the clock.
The cars feature coachwork by Leonardo Fioravanti of Pininfarina - one of the most talented designers of his era.
It was the 113th car to roll off the production line and was built especially for the American market.
It was originally bought from Italian-American race driver Luigi Chinetti in Connecticut by a Mr Nelson, who wrote in a letter of provenance "Luigi Chinetti Sr. spent a great deal of time working with me on this Daytona Spider."
It later passed through a series of owners, including the former CEO of Tag Heuer watches, before being consigned in the present sale.
Also featured is a 1966 Ferrari 275 GTB, which carries an identical estimate of $2.6m-3.2m.
It's a prime example of the marque's output from the 1960s, combining power and handling with stunning coachwork.
In February this year a 1968 275 GTB sold for a world record $3m at Bonhams Paris. Another example from 1966 achieved $2.6m at Bonhams' Scottsdale auction in January.
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