These are small pocket opera glasses made by 'Colmont Fabi Paris' . The brass body is covered with leather. Both eyepieces are signed. The underside of the bottom bridge is engraved Lily. Magnification is X4, enough for a closer look at the performers while still allowing most of the stage to be seen. Exit eyepiece diameter: 10 mm. Objective diameter: 20 mm. Fully extended height: 4.5 cm.