78/5205
[Stereoscopes]. Roswell's patent stereo graphoscope,
mahogany body, with a pair of folding viewing lenses and inset bone plaque inscribed 'Rowsell's Patent Graphoscope', and a sliding stereograph rest, 10,5x40x23 cm. (folded), ±1870.
- Lacks the large sliding graphoscope lens.
€ (100-150) 140