Stores Ref. A1/AA 5252 Pouch, basic, M.T. Drivers
Stores Ref. CN 1490 Web Equipment, Patt. ’37, Pouch, basic, M.T. Drivers
The Pouch, basic, M.T. Drivers, was one of many wartime introductions, coded in the 5000 series, here introduced by A.C.I. 959/1944. Note that it did not originally have “Patt. ’37 W.E.” nomenclature, as with several items only added to the Pattern post-war. There was evidently no L. of C., which would have notified that it should be added to the V.A.O.S.. In consequence, in 1951, it was marked as N.I.V. in L. of C. §C4686, with no Old Designation. This L. of C. re-coded the wartime 5000 code allocations, on this pouch to CN 1490, in the course of which it was also entered under the W.E., Patt. ‘37 sub-title. The A.C.I. authorised the withdrawal of Carriers, cartridge from M.T. Drivers who, though not stated, had evidently exchanged their rifles for Sten M.C.s. Also authorised was the issue of a pair of Attachments, brace, so that Braces could be worn. Only a single Pouch was worn.
The M.T. Drivers pouch was a Mark III pouch, but fitted only with a broad webbing belt loop, 2-inches wide. This allowed seated M.T. (Motor Transport) Drivers to wear the pouch “…on the left or right side whichever is more convenient when driving…”. All examples noted have a press-stud closure, not Q.R.
The example here is maker marked "Finnegans Ltd." and dated 1944.
Source:-
http://www.karkeeweb.com/patterns/1937/1937_pouches.html