United Kingdom - Splendid and rare example of historic iron police handcuffs in the shape of an “8” (Figure of Eight) - Military accessories

Splendid and rare example of historical iron police handcuffs in the shape of an “8” (Figure of Eight Handcuffs), dating from the Victorian era (19th century).
Made in England by the historic manufacturer Field & Son, based in Holborn, London. The original period markings are clearly visible and stamped on the iron body: “FIELD & SON,” “HOLBORN LONDON,” and the serial/model number “235.”
The item is in excellent condition for its age, retaining a beautiful natural patina on the iron with no deep rust. It comes complete with its original key, which screws perfectly into the lock mechanism at the bottom.
A highly collectible piece for enthusiasts of police history, military antiques, and historical restraints.