When did you last see a Citroen GS van on the road - come to think of it, when did you last see a GS car? A high price ensured that very few of these Gallic commercials found buyers, and I will be surprised if any have survived in right hand drive form.
Note the air muff on the grille of this one, which was used in winter to reduce air flow and get the engine up to temperature quicker. Every GS came with one of these in the boot, but few owners actually knew what they were for.