Description

Photogravure portrait of Joseph von Frauenhofer (1787-1826) after a drawing by Karl Christian Vogel von Vogelstein, 1825.

"gez.v. Unbek Meister // 8688. // Jos. Frauenhofer // Photographische Gersellschafft, Berlin".

Additional Information

From the collection of D. J. Lovell, author of "Optical Anecdotes" (International Society for Optical Engineering, 1981).