Amazing that this open body PSF was manufactured as late as 1965, when fire services in France, including BSPP, were buying fully enclosed full sized pumpers as early as 1921! These were manufactured on both Hotchkiss and Laffley chassis with almost identical bodywork, capacities and crew accommodations. For most of the time they were deployed, the follow up major pump - with a crew of up to twelve firefighters - did not usually have a water tank, so the PS or PSM (with foam) was expected to tackle the fire and, if it was small enough, finish the job.
Try picture 28422. My mistake! I think this rather stylish Citroen PS was before the Citroen Guinard you mentioned, some examples of which are also to be found on this site.
Added by Rob Johnson on 21 November 2024.