When keeping your eyes peeled at the thrift store, some of the most notable American grinder brands of the era to look for are Enterprise, Griswold, Universal, Climax, and Keystone. Once you find a promising meat grinder, the next step is to inspect it and assess its condition. If you're thrifting for antiques to resell them, there are a few other features besides condition that can increase an old meat grinder's value. For example, extra-large and extra-small grinders are rarer than standard-sized kitchen models, which can fetch more on the open market. A grinder that includes its original packaging or has unique features, such as special attachments, will also be worth more.