Helping my mom get rid a Paidar Barber Chair. I don’t that much about them, all I can find are the numbers of the patent# 5 1594408-1594409 and some numbers underneath one number is 2762R under the seat frame along one edge. and a K on the left side foot rest with a 571 on the right. What is its information and how do I determine its worth? I has only had the seat back recovered otherwise it is as delivered from the factory that I can tell. Shawn