This is from the site Bring a Trailer (https://bringatrailer.com/) ...
This 1956 Poirier Voiturette Monoto XW5 (chassis 1555) was recently unloaded from a collector in Belgium, making the big trip across the Atlantic just a few months ago. It’s further said to have been taken off the road some ten years ago, but is also reported to have run a few times a year since then. Reportedly, only a few thousand of these were ever produced, filling a niche for cheap, reliable city transportation for average citizens of a recovering post-war France. Find this one here on eBay in Johns Island, South Carolina with reserve not met.
The patina on this interesting trike is just about perfect, and it’d be ideal to leave it as-is. Apart from the worn olive paint and a few small dings, the tub looks pretty solid, and we can’t seem to spot any heavily rusted areas. A couple of notable features include drum brakes at all three corners and a prominent hand-operated gearshift lever. The windscreen isn’t currently fitted, but fortunately is included.
The rear jump seat folds up and out of the way to allow access to the 5 HP 125cc Ydral two-stroke single, and outward appearances suggest it should be a dead-simple unit to wrench on. It hasn’t been started since brought over to the US, so current running condition isn’t known.
A cool period advertisement shows that the trike was equipped for the road with a windshield, mirrors, and warning lights.
It’s difficult to imagine a more interesting (or geeky) runabout for in-town duties, though a scarf, leather helmet, and goggles would pretty much be mandatory to complete the look.