White oval Bright's patent bi-focal spectacle lens
- Made:
- 1912
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White oval Bright's patent bi-focal spectacle lens with triangular segment, AD 1912.
Details
- Category:
- Optics
- Object Number:
- 1921-323/53
- type:
- ophthalmic lens
- taxonomy:
-
- component - object
- spectacles component
- credit:
- Dunscombe collection of spectacles
