Adrian und Stock (Blitz u.a.)

[Brille]

Founded in 1869 by Walter Stock and Carl Adrian in Solingen.
More detailed information on the history of the company can be found here:

https://www.historytoy.com/Firmengeschichte-Firmenbeschreibung-Historie-Stock-Walter

Here is a 101/2 in 5/8

Regards Brille