Matchbox Yesteryear No.4 Sentinel Steam Wagon, this is a scarce version with black plastic wheels.

First issued in 1956, this lovely example is in 99% mint condition. A couple of the decals are missing small bits, see the pics.

The box is original, complete and in very near mint condition, with light signs of age wear and a couple of minor creases to the card. 

From a small but nice collection of Matchbox Superfast and 1-75 models.