I have a parade chair made by Stafford Johnson. It is not the World’s Fair model; I assume it’s an earlier version because they patented that in May of 1935 and this one is branded “Patent Pending”, along with Stafford Johnson and Ionia Michigan. Also, it has a one-piece hooked handle like an umbrella. As an earlier, though not so famous model of the Kan-O-Seat, is it likely to be more or less valuable?