FRENCH MOTHER OF PEARL OPERA GLASSES: Two pair, one labeled Chevalier Paris, MOP on brass, 3 1/4'' x 2 1/4'' adjusting to 2 7/8'', with case. The other labeled Lamier Paris, MOP on brass with scroll trim work, 4 1/4'' x 2 1/2'', adjuster in need of tightening?. Two pair sold as a lot.