Fine antique French Napoleon III or Victorian era gilt bronze & genuine ivory monocular or opera glass, eyepiece marked "Bourguignon Brevete, Passage de L'Opera a Paris"! An elegant piece, whether you're wanting to use it or, most often, employ it as a decorative accent.
Good to very good condition. The mail flaw with this one is that the glass eyepiece is missing a small section. Amazingly though, I can hardly even tell it's gone when looking through, it still works. One small hairline age/drying crack in the ivory. See pictures for all measurements.
