Original set of 4 early bronze MR-series Mersey lock keys for Mersey-pattern 10-lever safe/security locks of the type supplied by WLN, PSA, Chubb and The Crown Suppliers.
These keys are associated with high-security British lock systems used across MoD, government, military, naval, utility and secure commercial environments.
Unlike the more common yellow brass examples, these have a darker bronze tone with an aged reddish/brown patina, giving them a much older and more distinctive appearance.
This is a random-number set, ideal for collectors, locksmith displays, safe engineers, historic British security hardware collections, film/TV props, museum displays, industrial décor or restoration reference stock.
Good original vintage condition with attractive aged bronze patina, surface marks and signs of historic use consistent with age.
All four keys remain straight and structurally sound with no obvious cracks, breaks, repairs or significant distortion. Stampings remain visible and the bit profiles are well defined.
Surface wear and ageing are consistent with long-term service use and storage. Sold as collectable historic Mersey lock keys, exactly as shown.
Sold strictly as collectable historic keys, display items, props, memorabilia or decorative artefacts. No guarantee is given regarding operation with any particular lock. Buyers should satisfy themselves regarding suitability for their intended purpose.