The fork crown looks a lot like the one on the Téval I acquired recently:



Edouard Téval worked as a mechanic for Plume Sport, before taking over his parents' bicycle shop in Berchem and starting out on his own. He had his frames made by Plume Sport, and those are generally marked on the BB shell with "PS" and a serial number. However, I would not be too surprised to find one without those marks, as this was common practice for Belgian frame builders when working for other shops.