"Optical Collection… Prisms… Mirrors… Lenses… Magnifyers… 72"
Rare collection... I've said it all in the title of this ad. A whole host of thick or convex lenses, flat or aspherical, concave mirrors, two prisms of varying widths and thicknesses, including some very small convex ones. This collection was used in science laboratories where physics played a significant role (high school, etc.). Note that two pieces have minor damage (but this is not included in the count). 72 items for observation and study, or even as artistic supports... Measurements range from 0.5 cm to 12 cm in diameter. 
Le Magazine de PROANTIC
TRÉSORS Magazine
Rivista Artiquariato