Rare Victorian Childs Exercise Chair Yew Wood

This is a very rare Victorian childs excersice high chair part yew wood, the idea is the child grasps the iron handles one on either side then pulls down (it has 2 springs in the mechanism underneath ) this hopefully will give them an appetite then they can sit at the table (High Chair) for supper. wether they were ever used for excersie is another matter, but rare all the same I only know of 3 other examples.