Antique Chevalier Paris Mother of Pearl Opera Glasses – Brass Patina, Working Mechanism (c. - Dual barrel Galilean optics with central wheel focusing shaft - 1850-1900 - France - Chevalier
Antique Mother-of-Pearl Opera Glasses with Lorgnette Handle – Henry Hirsch (Liège) - 1810-1910 - Belgium - Henry Hirsch