Some cars leave a paper trail; the Delahaye 3 1/2 HP left a name and a place in Delahaye's list. What follows is what can be said with a source behind it.
Its place in the line
Nearby in the Delahaye catalogue sit the Delahaye 103 and the Delahaye 12CV.
The record
The open record for the Delahaye 3 1/2 HP carries no verified engine, output, weight or price yet. MotorJury does not fill gaps with guesses; this entry gives the model a home in the catalogue and grows as sourced specifications and photographs arrive. Corrections: corrections@motorjury.com.