I have a 1923 Quadrilette in Australia. It is interesting most of the body types I see on the net, including these 2, have what I call a boat tail. I am under the impression the literal translation for the French name for this style is 'duck's bum'. What you see when a duck is upside down in the water feeding. My car has instead a small dickie seat at the back big enough for 2 children. All the bolts on the car a metric of cause until you get to the body when they are imperial. I suspect my can was imported as a chassis and the body built in Australia. By who I have no idea.