Vintage Leg Iron Prison Shackles Solid Metal Patina 1900’s

Description

Vintage Leg Iron Prison Shackles. Spoke with an expert and they expect these are from the early 1900s (they are not cast iron and there are still signs of playing on the steel). Total length of approximately 50 inches.
Theater prop?
Instructions:
To open turn key clockwise until fully removed and loose. Remove bar from lock housing. To lock, simply put the leg bar shackle back into place, then re-insert key and keep turning counter clockwise until tight.
Note: openings for these leg irons measure approximately 3 1/2 inches wide and 3 inches in depth.