English double spring folding eyeglasses with smoked glass oval lenses in an aluminium frame, c 1900 (only 15 years after aluminium became commonly available).
Details
- Category:
- Optics
- Object Number:
- 1921-323/332
- Materials:
- aluminium alloy, steel and glass
- Measurements:
-
overall: 35 mm x 105 mm x 4 mm, , .01kg
- credit:
- Dunscombe collection of spectacles