It is always a treat to get a cool vintage signet ring in that's never been engraved. This one is hallmarked for Birmingham England, 18k, and the year 1940. It has all the awesomeness of the machine like qualities popular during this era. Nice large size too!
Details...Currently a size 11.25, this ring comes with one free sizing. The top measures 13.6mm x 12.6mm, 4mm band at the back.