Catalogue Number: 2808
Large comprehensive trial lens set in black leatherette case with trial frame and test card
Sub-Category: Trial lens case
Year Of Publication/Manufacture: c 1935
Time Period: 1900 to 1939
Place Of Publication/Manufacture: Paris, France
Publisher/Manufacturer: Societe des Lunetiers (G A Patouralle, Paris)
Description Of Item: Large timber case, 450 x 350 x 105 mm, covered with black leatherette, with leather carry handle and a hinged lid lined inside with brown velvet and secured by two slider catches and a keyed lock (with key). Removable timber tray fitted to take 34 pairs of nickel rimmed concave lenses to 20 D Sph, 34 pairs of brass rimmed convex lenses to 20 D Sph, 19 pairs nickel rimmed convex cylindrical lenses and 19 pairs of brass rimmed convex cylindrical lenses, both to 6.00 D Cyl, together with 10 prisms trial lenses to 10 prism dioptres and 9 auxiliary devices. A centre compartment holds a later 4 cell ACCURIST trial frame marked made in England and two optician's rules, one yellowing clear plastic and one white plastic marked Victorian Optical Co Pty Ltd of 182 Collins Street Melbourne. Loose in the case are (1) a test type reading card in a leather frame with a cardboard back and (2) a prescription for glasses form. A small brass plate screwed to the bottom of the trial frame compartment is marked Societe des Lunetiers Paris / G A Patouralle, Paris).
Historical Significance: The Association fraternelle des ouvriers lunetiers was founded in 1849. It was a spectacle-frame makers' cooperative in the Marais quarter in Paris and became the Societe des Lunetiers (SL). It was the originator of the Varilux lens in 1959 and became Essel in 1962. Lissac Freres (Lissac Brothers later the Lissac Group) in Paris was founded in 1931 and became Silor in 1969. These two companies, Essel an Silor, merged in 1972 to become Essilor.
Condition: Very good except left slider catch is defective and therefore difficult to open case.
Location: Archive room. West wall. Unit 5 Drawer 4