Catalogues for sale
For catalogue orders and enquiries please email Steve Steere at perfin.society@gmail.com
This page gives details of our main catalogue of GB perfins, the Gault-3 catalogue, together with some other catalogues covering specific aspects of GB perfins.
We no longer offer printed catalogues. Instead, we offer the electronic options listed below.
Scroll down the page for more details on these catalogues.
Gault-3 catalogue of GB perfins
Perfins on the Line Engraved Issues of Great Britain
A Catalogue of Sloper's Wartime Provisionals
The Ron Bowman Railway Catalogue
The Gault Catalogue of Irish Perfins
To order any of these catalogues, please email Steve Steere at perfin.society@gmail.com
Some catalogues are available for purchase by non-members at a higher price, please contact Steve for details.
Sloper 158
Roy Gault
2026
USB "Twister" memory stick
Released on 13th March 2026 to coincide with the 158th anniversary of Joseph Sloper being granted permission to perforate G.B. Postage Stamps with the initials of firms, the ‘Twister’ USB memory stick contains the following in pdf format:
- The complete Catalogue of G.B. Perfins (Details), now named The Gault-3 Catalogue of G.B. Perfins {over 3,700 pages}
- The Tomkins Catalogue of Identified G.B. Perfins.
- The complete ‘G.B. Stamps known with Perfins’.
- All GB Perfins spreadsheet listing the perfins in the Gault Catalogue, and a guide to identifying partials by using it
- Sloper Records, which includes the 1868 letter from the Postmaster General giving J Sloper permission to perforate Postage Stamps
- A complete set of the Perfin Society Bulletin 1957-2025
The information on the stick is correct as at 1st January 2026.
Gault-3 Catalogue of Great British Perfins
Roy Gault
Roy Gault
2026
Digital publication, 3758 pages
Released on 13th March 2026 (the 158th anniversary of Joseph Sloper being granted permission to perforate G.B. Postage Stamps with the initials of Firms), this is the definitive catalogue of all GB perfins.
Every perfin known on GB stamps (as at 1st January 2026) is illustrated and details of the user, dates and place of use and which stamps are known with that perfin are given where known.
The complete catalogue runs to over 3,700 pages.
This catalogue is only available as part of the "Sloper 158" USB memory stick detailed above.
Updates to the catalogue are published every two months.
Gault-3 Catalogue sample page
Perfins on the Line Engraved Issues of Great Britain
Roy Gault and Maurice Harp
2026
Digital publication, 567 pages
The 2024 edition was awarded a Large Vermeil medal in the Literature L3 class at the EuroPhilEx 2025 international exhibition.
A detailed listing of all 1,392 Different Dies (using the tried and tested format in ‘Gault-3’), along with additional historical details concerning the user (where known) accompanied by numerous images adding to the story.
There is also an introduction expanding on the ‘Handbook of British Perfins’ first published by John Nelson in 1967, but branching out into Joseph Sloper’s family tree and his Victorian workforce, the alphabets that were used, errors, illustrated covers, and lots more and a spreadsheet itemising all the plate numbers against each of the dies.
A Catalogue of Sloper's Wartime Provisionals
Roy Gault
2026
Digital publication, 395 pages
A much expanded and updated edition of the Sloper Wartime Provisionals catalogue which first appeared in 1992 and won a silver medal in the Philatelic Literature section of the 1995 Autumn Stampex Exhibition held in London.
Wartime provisional perfins were produced by J. Sloper & Co. after their premises were bombed in 1941, using combinations of perfin dies to produce the required letterings.
In addition to the fully illustrated catalogue, a spreadsheet listing all 827 provisional perfins and scans of the original ledgers from J. Sloper & Co. that provided much of the information in the catalogue are included. Also included are scans of all the other post-WWII Sloper ledgers which are currently on the Perfin Society website.
The Ron Bowman Railway Catalogue
Roy Gault
Railway Perfins of Great Britain & Ireland (1868-1990)
2026
Digital publication, 194 pages
ISBN 978-0-9564628-7-9
Named after the late Ron Bowman, who produced the first catalogue of GB railway perfins in 1976.
Covering a ‘Brief History of GB Railways’, with the all important brief histories of each GB Railway Company who used Perfins, along with Foreign Railways based in the UK, plus any suppliers of railway equipment and services etc.
Full details of each of the 288 perfin dies from 104 different companies appear at the back of the book.
The Gault Catalogue of Irish Perfins
Roy Gault
Third Edition
2026
Digital publication, 195 pages
A fully illustrated catalogue of all perfins known used anywhere in the island of Ireland, including British, Irish Free State and Eire stamps.
A Catalogue of GB Perfins found on Stamps from Coils
Roy Gault
Third Edition
2026
Digital publication, 177 pages
The objective is to illustrate all known perfin dies used on Great British Postage Stamps coming from Coils, also referred to as ‘Rolls’. This includes the ‘unofficial’ hand-made rolls of stamps (from c1910), as well as the official rolls produced by the Post Office from August 1918. The make-up and identification of the ‘official’ rolls also appears at the back of the catalogue.
A basic introduction to ‘Coil Stamps’ has been presented that is relevant to Perfins rather than say, Vending Machines. This is followed by the details for each Perfin Die as per ‘The New Illustrated Catalogue of Great British perfins’, but organised under the various categories numbered 2 to 9 below. An overall index is included at the back to help locate any particular Perfin.
Other catalogues of perfins on specific issues
Roy Gault
2026
Digital publications
Fully illustrated listings of all known perfins on the following Great Britain stamp issues:
1913-39 KGV "Seahorse" high values (with Ian Hamill) : 182 pages
1924-5 British Empire Exhibition : 29 pages
1935 King George V Silver Jubilee : 180 pages
1957-60 Graphite lined Wildings : 9 pages
QEII Machins issues (£sd) : 73 pages
QEII Machins issues (Decimal) : 112 pages
GAULT-3 CATALOGUE OF GREAT BRITISH PERFINS : Monograms
Roy Gault
Third Edition
2026
Digital publication, 24 pages
Details of the 150 different ‘Monogram’ dies, all of
which can be found in the various sections of the Gault-3 Catalogue.
They have been grouped here for convenience.
By definition, a monogram is a pattern formed by two or more
interwoven initials. With regard to Perfins, this ‘interweaving of
initials’ has been interpreted as the sharing of one or more holes
between letters. Monogram status is designated by the addition of a
lower case ‘m’ suffix to the Catalogue Number.
Tomkins Identities Catalogue
Roy Gault
T13th Edition
2026
Digital publication, 775 pages
Named after the late Basil Tomkins, this 13th edition lists (without illustration) all known G.B. Perfins with identified users reported as having been used on the postage stamps of Great Britain, together with the user and period of use.
Perfins without an identified user are not included in this catalogue, but are included in Gault-3.
This catalogue is only available as part of the Sloper 158 USB stick.
Tomkins Catalogue sample page
Updates to the Gault-3 catalogue
The pdf files below are updates to the third edition of the Gault Catalogue of Great British Perfins and record new dies and new identities recorded by the Catalogue Editor. The pages below include all the new dies and identities recorded since 1st January 2026, the cut-off date for inclusion in Gault-3. Scroll down to download the individual updates issued every two months.