Allegro. One of my favorite Swiss bikes. I'm especially fond of the late 50's- early 60s Allegros. Bobby Kemp is still with us according to Craig Griffiths, the Allegro guru.
Btw I have frame number 165182. Not much left of it as I recently transferred parts to a 1960 Allegro Luxe that I sold. Both Allegros were 'Bobby Kemp' models.