Pair of expanding opera glasses marked 'par brevet d'invention et de perfection ement'
Pair of expanding opera glasses marked 'par brevet d'invention et de perfection ement' , French 1890-1924.
- Materials:
- brass (copper, zinc alloy) , copper (metal) , felt , glass , steel (metal) and tortoiseshell
- Object Number:
- 1997-1924/1
- type:
- opera glasses
- Image ©
- The Board of Trustees of the Science Museum