


Oval white bent glass for protectors spectacles.

Oval smoke or neutral tint

Round white 'Kryptok' tonc bi-focal spectacle lens

Oval smoke or neutral tint bent glass spectacle lens

Bi-focal spectacle lens
1900

Oval white double convex pebble spectacle lens with a grooved edge

Oval smoke or neutral tint bent glass spectacle lens

Smoke spherical-cylinder concave spectacle lens

D-shaped green tint glass for preservers spectacles

Oval blue bent glass spectacle lens, pale tint.

Oval blue bent glass spectacle lens, medium tint.

Oval 'Chlorophylle' bent glass spectacle lens

Oval 'Chlorophylle' bent glass spectacle lens

Oval blue bent glass spectacle lens

Oval blue bent glass spectacle lens, dark tint.

Round white 'lenticular' concave spectacle lens

Oval amber double concave spectacle lens

Round white deep meniscus concave spectacle lens

Oval smoke meniscus concave spectacle lens

Oval pink meniscus convex spectacle lens

Square 'Kryptok' fused slab and segment

Oval white double convex spectacle lens

Square 'Kryptok' fused slab and segment

Round 'Kryptok' fused slab and segment

Square 'Kryptok' fused slab and segment

'Strubin' cemented bi-focal spectacle lens
1891

Oval white double concave spectacle lens

Round blue double convex spectacle lens

Round white 'Kryptok' tonc bi-focal spectacle lens

Oval smoke double convex spectacle lens

Square 'Kryptok' fused slab and segment

Oval white meniscus concave pebble spectacle lens

White convex spectacle lens

Plano-concave cylinder 'chlorophylle' tint

Blue spherical- cylinder concave spectacle lens

Blue plano-cylinder concave spectacle lens

Pair of variform spectacle lenses
1990-1995

Oval white meniscus concave spectacle lens

Lens, oval shaped
1890-1940

Optical Trial Case
1911

Two bifocal spectacle lenses
1870-1930

2 spectacle lenses
1801-1920

Lens, circular, blue-tinted glass
1880-1930

Lens, oval-shaped, pink-tinted
1890-1950

Collection of spectacle lenses

Oval blue parallel glass for protectors spectacles

Oval spectrum blue parallel glass

Oval smoke or neutral tint

Oval white concave bi-focal spectacle lens with a ground edge
1876