This is a pair of leg braces made from leather and aluminum probably from the They are in great condition for their age, the leather is not rotten and the metal is unscathed. They stand tall and are at the widest point. The shoes measure from tip to heel.
Prosthetic arm with wooden fingers & metal joints is a Carnes model from the late nineteen-teens (WWI era). It is named for William Carnes, an amputee who fashioned the first workable shoulder harness design around 1915