Dual purpose folding ophthalmoscope/ opera glass
1930-1960
Pair of minature opera glass binoculars
1910-1930
Pair of minature opera glass binoculars
1900-1930
Black celluloid vanity case inform of a pair of opera glasses
1910-1935
Pair of collapsible opera glasses binoculars
1890-1920
Skeleton Opera Glasses
1870-1900
Opera Glasses
1895-1905
Opera Glasses
Prismed opera glass, mounted
Collapsible opera glasses in metal frame
1900-1930
Pair of folding opera glass binoculars with integral case
1890-1920
Pair of lorgnette type opera glass binoculars
1900-1920
Pair of plastic opera glass binoculars
1930-1960
Pair of opera glasses with mother-of-pearl mounts
1896
Pair of opera glasses with ivory and brass body
1862-1901
Mother-of-pearl opera glasses
1885-1895
Folding opera glasses, French patent, in velvet case
1850-1950
Theatre Binoculars with Plastic Lenses
1931-1941
Quick Sight Binoculars
Pair of six draw collapsible telescopic opera glasses
1800-1899
Folding opera glasses, French patent, in velvet case
1850-1950
Pair of expanding opera glasses in imitation leather case
1890-1924
Mother-of-pearl opera glasses with leather case
1885-1895