This listing is for a complete set of 12 original solid brass Mersey lock keys, all in the classic 14-lever pattern used across historic British safe, cabinet and document security systems.
These keys are the early solid-milled brass type, not the later laminated construction. They have the characteristic stepped bit profile, heavy brass bodies and stamped numbering typical of Chubb, WLN, PSA and Crown Suppliers patterns from mid–late 20th century British secure storage.
A full, matching set of twelve solid-brass Mersey keys is extremely uncommon and ideal for collectors, locksmiths, safe engineers, and restorers of vintage Mersey-pattern locks.