It is believed that this incredible Ferrari 275 GTB/C Speciale will become the most expensive Ferrari in the world when it crossed the block next month in Monterey. RM Auctions thinks that because it was only one of three built in 1964/5, it could fetch in the region of $35 million which will easily beat the current $25 million record of the 1967 Ferrari 275 GTB/4S NART Spider that was bought last year.