The razor was probably made in Sheffield and stamped with the cutlery stores logo. Quite a common practice back in those days. Many USA razors are stamped with the distributors name along with Solingen. Hoffritz for Cutlery is another example of the same thing. I have a blade marked William Landell, Glasgow that was probably made in Sheffield.
Just looking at it I wouldn't think it needs more than polishing with some metal polish and a paper towel and then hone to shave ready. In the UK Neil Miller
here or Steve Dempster
here could take care of it.