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This model is the Dinky 942-G-1 Foden 8 Wheel Tanker in Dark Blue "Regent" livery.
The model features a dark blue cast metal cab and chassis with a tin tank in striped red, white and dark blue attached. The front bumper, grill and headlights are painted silver. On the tin tank are a black ladder and catwalk, two black tanker caps and a blue outlined "REGENT" on both sides. At the rear of the tank is the Regent emblem in red, white and blue.
All wheels are black rubber with red "Supertoy" hubs.
The baseplate is actually the chassis casting and it is dark blue painted metal with Dinky Supertoys in the centre, followed by "FODEN", then "Made in England" and lastly "Meccano Ltd".
This model was issued between 1955 and 1957.