www.925-1000.com

Hi

What might be the origins & age of this watch case? Its hallmarked 0.935 & 3 lions.

Thanks

Hi,
It`s Swiss (bear marks, not lions).
Take a look here:
http://www.925-1000.com/foreign_marks3.html
The movement is much more reliable for dating watches,the same marks being used over many decades in 19th and 20th century.
Regards

Thanks.