This antique medical knee display or study comes directly from the estate of an orthopedic surgeon. It is 100% guaranteed authentic. Pieces like this are are becoming more and more difficult to come across. It is constructed of bone and steel. It moves to show the structure of the knee itself. We at M&K have not seen another one except on television. We estimate it from the early part of the 20th century, perhaps earlier. Overall a very interesting piece. In working, overall, very good condition.

Very good. Working condition.