All in good condition
The glasses have a roller in the middle to extend it.
To be truthful I actually don’t know how to tell if it is mother of pearl.
I don’t know if it is vintage

All I found out is these brand names on the eye pieces;
- b. brauckmann & co
- Optisches Institut

If you could help me with anything about these opera glasses, I would very much appreciate it.
I do accept offers
If you have any questions, please don’t hesitate to ask.