shown here. Both are a classic style of upright bars found on vintage French city bicycles. These bars are narrow, with long gripping areas that are nearly parallel to each other - placing the rider's hands in a position similar to holding a tray. The Bellevilles are 5cm narrower than the Porteurs (43cm vs 48cm) and are completely straight across the front (whereas the Porteurs have a slight forward sweep).
Oh - and if anybody wants some