hello hannes
the citroen van in your photo looks like one we had in paris in the late 1960s. we used it as a camper.
i don't have the details any more, but here are some possible reference points for you in your search:
- its nickname was "panier a salades" = salad basket. it may also be called a "type H" or "fourgon police"
- it was used as a delivery van by almost all trades. even the police used it to transport themselves or criminals
- front wheel drive, 3 speed manual gearbox
a Google search under "panier a salade citroen" produced a great deal of information.
thanks for the memory!
greetings from hamburg
rick