Browning Hi Power with serial number denoting it being purchased by Great Britain for its Special Air Service and MI5 Undercover units. This particular "E-Prefix" Browning is covered in great detail in Blake Stevens book "The Browning High Power Automatic Pistol" and is a prized collectible Browning due to its service with British elite forces.
This Browning Hi Power retains approximately 85-90% of its original finish. Considering this pistols age (close to 60 years old) and the fact that it was issued to elite forces, it is in remarkably good condition. British SAS and MI5 agents traveled the world with these E-series Browning High Powers, so if this gun could speak what a story it would tell.