Antique LeMaire Fi Paris Opera Glasses 1800s

Antique 1800's LeMaire Fi Paris, C.A.W. Crosby & Sons, Boston, mother of pearl opera/theater glasses in original case. The opera glasses measure 2 1/4 inches in height when closed and 2 7/8th inches high when fully extended, and are 3 7/8 inches across the base of the lenses. They have a smooth action; with no damage to the lenses or the mother of pearl. FLAWS are some age related tarnish spots to the brass. Please see photos for case has damage, and to see wear and tear on glasses.