People tend to remember the most successful Formula 1 cars - or the machines that were surprising or unmitigated disasters.
There are plenty that sit between those two categories and a small handful only missed out on winning championships by the smallest of margins. The 2005 McLaren MP4-20 raced by Kimi Raikkonen and Juan Pablo Montoya is probably the best-known recent example, but a less obvious car could have been a title winner 50 years ago.
The Brabham BT33 was not revolutionary in the way that the Lotus 72, which did win both the drivers' and constructors' championships in 1970, was. It was a typical car of the Jack Brabham/Ron Tauranac combination - a pragmatic and relatively conventional car executed well. It was greater than the sum of its parts.