Seller: rotocane (669) 100%, Location: Longmeadow, Massachusetts, Ships to: US, Item: 161893641770 Bronze Hardware from the original MCI Concord Prison in Massachusetts. Bronze Handle Keys were utilized on Cell Doors for Prisoners. Original from 1878. From a Private Collection in Williamsburg Massachusetts 3 3/4" X 2" Set of 3 Each Key has a different diameter to utilize with the corresponding door. They were handed out to political figures in Massachusetts years ago by the Jail.