Fans of both car history and US presidential history will want to tune in for Bonhams's American Presidential Experience Auction in New York on October 14, as the event will see not one, but two classic presidential limos with ties to assassinated former US President John F. Kennedy cross the block.

The more intriguing of the two, designated "Limo One" during its time in service, is a white 1963 Lincoln Continental convertible that carried John F. Kennedy to the Hotel Texas Ballroom on the morning of November 22, 1963, where Kennedy delivered his final speech.

To be clear, this isn't the car that Kennedy was assassinated in. That car was impounded as evidence after the assassination, and later modified further before being pressed back into service in 1964, serving for another 13 years before retiring to the Henry Ford Museum.

But this Continental is an important link in US presidential history nonetheless, and it's been expertly restored by Baker Restoration of Putnam, Connecticut, receiving a respray and a newly rebuilt motor. Crucially, though, the red leather interior has been left in original condition. It's been assigned an estimated value of $300,000 to $500,000, and if it sells, it will mark the second time in the last decade that the Lincoln will have changed hands.

The second presidential limo up for auction is a 1960 Lincoln Continental Mark V Executive Limousine, which President Kennedy used for personal trips in and around DC. It was specially upfitted for duty with bulletproof doors, a divider, passenger air controls, and curiously for the time, a two-way telephone. The car is valued at an estimated $200,000 to $300,000, after a careful exterior restoration that, again, left the interior untouched.

With Kennedy's assassination remaining to this day something of a national obsession, we wouldn't be surprised to see both cars bring in their estimated values in October. These are not your everyday Lincolns.