looks like the Fisher body logo, but not quite.
any ideas?
(https://live.staticflickr.com/65535/53865624148_e80a6d65bf.jpg) (https://flic.kr/p/2q4VppJ)jul232 (https://flic.kr/p/2q4VppJ) by Skip Albright (https://www.flickr.com/photos/skipskip/), on Flickr
Since GM and Fisher bodies used wood framing clear into late 1930s, the upholstery guys would have used tacks until then. I would bet every Fisher body plant had dozens of such hammers.
Yes that is in fact a General Motors Fisher Body Division tack hammer. I have one like it, They show up at garage sales occasionally around these parts ... Detroit Michigan
Joe B
Man i`d love one of those...nice find.