https://www.ebay.com/sch/i.html?_nkw=1927+national+cash+register

This register was made sometime between Jan. 1927 and Jan. 1928 !! I am guessing it doesn`t work ?? While the more ornate brass registers can be pricey,, these plain jane models are not !! Maybe $100. ,, less if it does not work !! You can look at the listings on ebay above !!