Between 1926 and 1944 the GWR built 471 tenders with a capacity of 4,000 gallons, all to basically the same design. These were paired with Kings, Castles, Stars, Halls, Granges and the 47xx 2-8-0s.

The first Lot (A113 - numbers 2384-2403) were built with large sandboxes on either side of the front footplate, double water fillers, double brake hangers and had frames which differed in detail from the remaining tenders. This Lot is not covered by the kit.