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The Webley Mk IV: A Collector's Guide

By MyGunDeal Collecting Desk · 12/17/2025, 5:11:21 AM · Collecting

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The legacy of the Webley Mk IV: A collector's guide to British service revolvers

The Webley Mk IV is a significant model in the history of British service revolvers, serving as the standard-issue sidearm for the British military from 1939 through the mid-1960s. This guide will delve into its production history, key markings, original versus refurbished examples, common fakes, and preservation tips for collectors.

Production history

WWII Webley & Scott Mark IV “WAR FINISH” revolver .38 caliber ...
WWII Webley & Scott Mark IV “WAR FINISH” revolver .38 caliber

The Webley Mk IV was developed as a response to the need for a reliable and robust revolver during World War II. It was officially adopted in 1939, succeeding the Mk III and featuring several improvements in design and materials.

Webley MK III .455 Webley caliber revolver.
Webley MK III .455 Webley caliber revolver.

The Mk IV was produced in .38 S&W caliber, specifically to accommodate the British Army's preference for a semi-rimmed cartridge. Early production models were made before and during the war by Webley & Scott, while later examples saw production by other manufacturers, including Enfield.

Production numbers varied significantly. Over 90,000 units were manufactured during the war years alone, with total production estimates exceeding 250,000 by the end of its production run in the 1960s.

Key markings and how to read them

When examining a Webley Mk IV revolver, look for the following key markings:

Webley Fosbery Model 1902 Automatic revolver .455 (PR72205 ...
Webley Fosbery Model 1902 Automatic revolver .455.
  • Serial Number: Located on the frame and barrel. Early models have a serial number range starting from approximately "1" to "90,000" for those produced before 1945. Post-war examples often carry serial numbers starting from "A" or "B" prefixes.

  • British Military Acceptance Marks: Typically stamped on the left side of the barrel or frame. Look for the crown over "G.R." (George Rex) or "E.R." (Elizabeth Regina) depending on the monarch reigning at the time of production.

  • Factory Codes: Each manufacturer had specific codes that might appear on the frame or cylinder. For example, "W&S" indicates Webley & Scott, while "R" stands for Royal Ordnance Factory.

  • Caliber Markings: Confirm the caliber of the revolver—most should be marked ".38 S&W" on the barrel.

Familiarize yourself with these markings, as they can provide vital information about the revolver's authenticity and production year.

Original vs refurbished vs modified

Understanding whether a Webley Mk IV is original, refurbished, or modified is essential for collectors:

Collection of "Shooter grade" WWI and WWII pistols | Jan C. Still ...
Collection of "Shooter grade" WWI and WWII pistols.
  • Original Examples: Look for consistent wear patterns that align with age and usage. Check for matching serial numbers on all major components (frame, cylinder, barrel).

  • Refurbished Models: Many Mk IV revolvers underwent arsenal refurbishment post-service. This may include re-bluing, replacement parts, or new grips. While not inherently negative, refurbishments can affect value. Verify if refurbishment was done by a known military facility.

  • Modified Revolvers: Be cautious with any modifications not authorized by military standards. Many collectors shun these due to potential impacts on value and collectibility. Common modifications include aftermarket sights or grips that do not match original specifications.

Common fakes and misrepresentations

Fakes and misrepresented Webley Mk IVs are prevalent in the market:

WWI Webley & Scott Mark I Navy .455 (PR72122) - Collectors Firearms
WWI Webley & Scott Mark I Navy .455.
  • Reproduction Parts: Some sellers might use reproduction parts to create a complete revolver that looks original. Inspect for signs of modern manufacturing techniques, such as machining marks that are too clean or inconsistent with wartime production methods.

  • Fake Markings: Be wary of altered or non-standard acceptance marks. Compare suspect markings with verified examples to ensure authenticity.

  • Restoration Claims: Claims of "all-original" may be misleading if the revolver has been heavily restored. Always ask for documentation regarding any restoration work performed.

Preservation tips

Proper care can prolong the life and condition of your Webley Mk IV:

How to get started in airgun collecting - Airgun World
Webley Mk IV.
  • Avoid Aggressive Cleaning: Preserve original finishes by avoiding harsh chemicals or aggressive cleaning methods. Use a soft cloth and minimal oil for routine maintenance.

  • Climate Control: Store your revolver in a climate-controlled environment to prevent rust and deterioration. Aim for a humidity level around 40-50%.

  • Handling: Always handle your revolver with care. Use gloves when necessary to prevent oils from your skin from affecting the finish.

In summary, the Webley Mk IV is an important piece of military history with a rich legacy. By understanding its production details, key markings, and preservation methods, you can enhance your collecting experience and ensure you make informed decisions when acquiring this classic British service revolver.

Sources

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