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  • The Explora

The '0-Prefix' Serial Number Book

Among the Westley Richards serial number books are two volumes of guns and rifles with an ‘O’ prefix. The series ran from August 1913 to September 1952. The first O-prefix gun is 01001, which is a 12-bore with single trigger and 28” steel barrels, delivered in October 1914 (it was ordered on 8th August 1913). The last entry is 02192; a single barrel trap gun with 32” barrels and 2 ¾” chambers, delivered some time in late 1952.

The O-Prefix books record:

No.

Barrels

Action

Actioned By

Stock

Finisher

Weight

Sold To

Date (of delivery)

References to barrel description in the relevant column record material, gauge, chokes and length.

References to actions in the relevant column record details like lever, hammer or hammerless, one or two triggers, model name, etc. Among the model names present are:

A&D (Anson & Deeley)

Ovundo

Centenary

Heronshaw (first recorded in Sept 1923)

Explora

Super Magnum Explora

 

While most of these serial numbers are prefixed with an O, some are altered to prefix with C or B or D, or used without any prefix at all (often these numbers are used for ‘fitter-in’ barrels. That is, new barrels fitted to an older gun).

For example, No.1987 is assigned to new 12-bore, Westley Richards steel, 28” barrels choked cylinder in both, fitted into gun No.7702 on 26th September 1935 for a Capt. P. Macnamara.

An example of a gun with an 0 prefix is No. 01474, which is a 12-bore Heronshaw with 30” barrels, made to pair with No.9109, for a Stephen Cox on 30th August 1924. It is a two-trigger ejector, actioned by Ward, weighing 6lbs 12 1/2oz.

Unlike the G and T-prefix guns and rifles, the O-prefix series is widely assigned to individual customers as well as other retailers. Trade customers are recorded (like Lyon & Co. London and Manton & Co. Calcutta) but individual customers are listed at leas as often as trade customers.

Among the customers listed are the Marajah of Patiala, the Khan of Bhopal, and Sir Percy Wyndham. Renowned author and hunter J.A. Hunter owned a .470 with detachable locks, 28” barrels and a single trigger, made in 1924 with serial number 01431, built for A. Sydney Waller. Hunter acquired it secondhand in 1938.

These guns appear to have been medium quality in general. However, there are exceptions, like No. 02142, made in 1950, and noted as a ‘best quality, Scott lever, detachable lock’.

O-prefix guns and rifles appear to have been made mostly outside the Westley Richards factory by outworkers, with actioners like Phillipson listed and finishers like Cross, H&J and Harris also noted.

They may have been stocked in-house, as stock dimensions are usually listed in detail without a named stocker being noted.

 


 

Westley Richards has an outstanding reputation for supplying a comprehensive selection of pre-owned guns and rifles. We pride ourselves on our in depth knowledge of the many sporting arms built over the last 200 years, placing particular emphasis on big game rifles, like the 577 Nitro Express, 505 Gibbs and 425 Westley Richards. Whether looking to grow or sell your collection of firearms, or simply require a trusted evaluation, our team from the sales department would be delighted to hear from you. To view the latest available, head to the used shotguns and used rifles pages, and for those interested in new firearms, explore our custom rifles and bespoke guns pages.

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Comments

3 comments

  • DH
    Daniel Hillon April 16, 2026

    Hello, I recently added a Westley Richards side by side shotgun to my collection. It’s serial number is 02001. It is a 12 gauge with 2 3/4 inch chambers and has 28 inch steel barrels. The forearm is a “beavertail” design. The stock is a straight English style. The butt is checkered. It has two triggers.
    Would you be able to supply any history on this fine shotgun?

    Thank you for any follow up can provide,
    Sincerely,
    Daniel Hill

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  • AW

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