This is a 1960s Libelle watch with an Ancre 17 jewel manual winding movement. Not much is known about the brand, but these watches are likely Italian-assembled with Swiss movements. I bought it NOS from a small store in Italy and had it checked and lubricated at my watchmaker's. https://youtu.be/Rp_EJ2cXHV0
A 1960s Libelle Watch (NOS)
