Physical description: mounted on the same piece of paper as Schaaf number 4276
Inscription: in ink, on mount, R No2 Specimen by Henneman Process usually termed the Collodion process. viz. the negative on Collodion on Glass the positive copy on [underlined] common photographic paper
This experimental photograph shares a mount with a second photograph of the same subject (Schaaf number 4276). This photograph is by Nicolaas Henneman, while the second print on the same mount is by Talbot.
The collodion process was invented by Frederick Scott Archer in 1848 and published his results in, The Chemist, in March 1851. The two experimental collodion photographs by Henneman and Talbot date from 1854.