I acquired an old Rotary quartz from a Boot Sale recently and it needs a new battery but I am unable to find one that fits. The size is close to 10mm x 2mm
Maybe someone out there will know what I need.
The watch movement has 'Seven jewels V8' stamped on it.
It also has the Numbers 952 121 as a casing stamp.
I will put a pic on so you can see what it's like.