Antique Highchair

This was my mother's highchair 83 years ago. It is all wood. The back is a bent tubular wood with a decorative flat wood peice in the middle.It has curious hardware on the tray. The underside of the tray has a wire running the whole length across which extends out the sides of the tray and fits into grooves at the very ends of the chair arms. The tray is attatched to arms which are attatched to the sides of the back to allow the tray to be raised up and around the back of the chair. It is missing the foot rest and has one peg where it was attatched still there. I am  looking for one that has the same hardware in order to restore it to it's original condition. I would like also to remake a foot rest in the correct shape and size. I have not yet found another one like this.