Claw feet Piano Stool made by Lyon & Healy 1800's

Hi, this is my old 1800s piano stool made by Lyon and Healy I found on the street for free I could not Believe that someone would just throw this on the street it's in such great condition for its age it has ball and claw feet it's tiger oak . But when I was doing my research I can't seem to find anywhere another one exactly like this one with that bottom oak board supporting the feet , Has anyone seen one or have one like this? The seat is adjustable by turning the sea under the sea there is a metal plaque with stamped lyon and Healy Chicago Any information would be great thanks hope you enjoyed