Unknown Convict Handcuffs

From Allen's collection

These handirons are unidentified by me but seem to be McColl handirons going by the legiorns in Yossies collection which I also have. They are made from cast 3/4 inch iron which has almost a square cross section. The joinst are ovelapping so the fit to the wrist is tight and secure. The connecting chain does not look original. In general, they are a heavy iron, simply made.