Ordnance Insignia of the British Army
Royal Army Ordnance Corps
1918 Pattern Insigna
Approved Versions
Other-Ranks Gliding Metal
Middle - (KK1025) Cap Badge
Left & Right - (CW 368) Pair of Collar Badges
Bottom Left - (HR 522) QVC Button
Bottom Right - (WL 443) Shoulder Title
(Adopted and Sealed November 1918)
In use by mid 1919 by most units.

Privately made, Blackened Gliding Metal Cap & Collar
Badges
Blackened Shoulder Title
For Officers & Warrant Officers Khaki Service Dress


Privately made, Gilt & Enamal Cap(
KK1026), Collar Badges & Gilt Button
For Officers Blue Dress Uniform
An non pierced garter version of this badge also exists
. 
(KK2270) W.W.II Economy Bakalite Cap Badge
Dark Brown Chocolate Coloured Plastic with 2 brass blades on rear
No matching Collar badges were produced as these were
not worn with Battle-Dress
In 1941 (ACI 2594 dated 27 December 1941) it was decided
in order to conserve metal, that cap badges would where possible
be produced in plastic. Some cap badges were deemed unsuitable
for this process. The ACI went on to say that plastic and metal
cap badges were allowed to be worn concurrently within any one
unit, and that Quartermasters were not to indent for plastic
badges in bulk merely to ensure uniformity.
483,386 RAOC Bakalite badges were produced between 21/03/1942
& 05/09/1945 by two Makers:
173,296 by MentMore Manufacturing Co Ltd (MMMC) & 310,090 by
Fraser & Glass (F & G)
A small number of these badges have been seen with no makers
mark, manufacture unknown.
Plastic cap badges continued to be worn after the war in some
units, when in working dress

Locally Manufactured, Cast Cap Badges
Other-ranks & Officers versions
Meanwhile in the Middle East, due to shortages
of supply, locally manufactured cap badges, invariably cast in
brass were being produced in Egypt and India, and authorised for
service use. (Some bear a manufactures mark, but many do not)
These should not be classed as poor re-productions as
they were produced by official RAOC order (Not just for the RAOC
but for most Regiments and Corps in the theatre of operations)
and can be found with both Lugs and Sliders.
Stores such as cap badges being heavy in bulk, were
given low priority when planning shipping space in wartime.
The Blackened version being offered for sale in RAOC Garrison
Officers shops.
M Comerford - August 2003 - HTML Revision 1