1920 Article Optophone Skeleton Device Blind Reading Optacon E Fournier SCA3

This is an original 1920 one-page article (one single-sided page), "The Type-Reading Optophone" featuring images of the standard forms of the Optophone; and a diagram of the arrangement of the optophone, an electrical device which enables the blind to read ordinary type, invented by Dr. E. E. Fournier d'Albe of Birmingham University. CONDITIONThis 91+ year old Item is rated Near Mint / Very Fine+. No creases. No natural defects. No surface rub. No tears. No water damage. Product Type: Original Print Article; Black / White Grade: Near Mint / Very Fine+ Dimensions: Approximately 10 x 12.5 inches; 25 x 32 cm Authentication: Serial-Numbered Certificate of Authenticity w/ Full Provenance Protection: Packaged in a custom archival sleeve with an acid-free black board (great for display, gift-giving, and preservation) SCA3A11B6C20