A pair of folding / collapsible opera glasses.
The frame is made of nickel-plated brass and is designed to fold completely flat for storage in a vest pocket.
They feature a "lazy tongs" mechanism to extend the lenses for focusing and are stamped "MARS BTEE FR & ETR MODELE DEPOSE
***Please study the photos as these form part of the description. They are not perfect and do have some dings to the frame etc.***
Priced fairly
Any questions please ask.
They will need a bit of tlc and a professional clean.
See pictures