Hi All, Wish I had found this site years ago, 70 now and recently retired but spent the last 40 years of my working life as a proffesional fret worker, mainly producing jigsaws and alphabet sets, so many questions during those years !. Now downsizing and clearing the remaining tools which once formed my workshop from my garage, I have a metal vice which I know was in my Father's workshop when it was cleared sixty years ago, so very old, the only markings it has on it are OB BRITISH MAKE, I have done quite a lot of online research but cannot find out anything about this item, any help would be very much appreciated.
( Two pictures attached ).
( Two pictures attached ).