These can vary in value depending upon the manufacturer. The Universal brand ones are quite common and I've seen them selling for about $12 but there are some that can go for quite a lot. I think I paid about $60 for mine, which was made by Winchester Repeating Arms Co. I've never seen one marked like yours, so it could be less common and worth some $$. If you run a search in the antique section of Ebay right now, grinders are ranging from next to nothing to a few that are listed over $100. If you have the attachments, that is another plus. Also if it is clean and fully functional. Can we get a photo of the opposite side of your grinder to help identify it?