From this listing for this Lotus F1 Car for sale:

I think the lotus 24 in the listing is a typo. The backend of this car looks like a lotus 25 not a 24.

From Wikipedia:

The Lotus 25 was a racing car designed by Colin Chapman for the 1962 Formula One season. It was a revolutionary design, the first fully stressed monocoque chassis to appear in F1. In the hands of Jim Clark it took 14 World Championship Grand Prix wins and propelled him to his 1963 World Championship title. Its last World Championship win was at the 1965 French Grand Prix.

The monocoque made the car more rigid and structurally stronger than typical F1 cars of the period. The 25 was three times stiffer than the interim 24, while the chassis weighed only half as much. The car also was extremely low and narrow, with a frontal area of 8.0 ft², 0.74m² as compared to the normal 9.5 ft², 0.88 m² It was also envisaged to have a column gear lever, to keep the cockpit width to a minimum, although this was only experimental and discarded. To assist the low profile and low frontal area, the driver reclined sharply behind the wheel (an idea seen in the 18, and pioneered over a decade previously by Gustav Baumm at NSU[3][4]), leading to the nickname ‘The Bathtub’, while front coil/damper units were moved inboard (as in the 1948 Maserati). The 25 was powered by the Mk.II 1496cc through to the Mk.5 1499cc versions of the Coventry Climax FWMV V8 in crossplane and flatplane formats. Later, Reg Parnell Racing in 1964 fitted BRM P56s of similar specification to their second-hand 25s. Such was the 25’s effect on motor racing, even today’s modern F1 cars follow its basic principlesAbout Peter Revson from Wikipedia: