Vintage Leg Irons 1880s with Key

Description

Up for sale is vintage pair of what we presume to be 1880s leg irons or handcuffs.  These have faint Patent markings and dates but we cannot quite make out the manufacturer.  There is a key that functions perfectly.  The chain is 11 inches long and in total these measure 20" from end to end.  Heavy-duty vintage sent in great shape.
Thank you very much for looking and please don't hesitate to reach out with any questions.