KALOSAT, "The Spectral Diffusion Lens" [catalogue catalog]

Hanovia Lens Laboratories: Newark, NJ, (1921). Paperback. Very Good. Item #21-7995

Illus., 7.25 x 5", pict stapled wraps, 12pp, covers rubbed and darkened, contents nice; with loose "Price List of Kalosat Lenses, April 1, 1921" card. SCARCE.

Price: $495.00