Some cars leave a paper trail; the Aston Martin DBR3 left a name and a place in Aston Martin's list. What follows is what can be said with a source behind it.
The story
The Aston Martin DBR3 was a sports racing car built in 1958 as an alternative to the DBR1, using a different engine and front end setup. The car was very short lived and eventually converted into a DBR1.
Its place in the line
Nearby in the Aston Martin catalogue sit the Aston Martin Mark II and the Aston Martin V12 Vantage GT3.