this is the original Hobart grinder post WWII, the the next A-9 design came on the market around 1950 (I could be wrong on dates). This is really a rare piece, and I have been offered a new jar from a 3D printer for about $50 bucks. I have pictures that I am willing to send along if you have an interest. You would need then for the printer. Please ask any questions that you may have before buying.