Mighty Mini Micro Matchbox Monday MB 28 Bedford Compressor Truck 1956-1958

This is a very early Matchbox model, so early it has no baseplate like a tootsie toy. It does have some nice details and more painted details than later Matchbox models. Later models sis not have painted details. The grill would be part of the baseplate. But this one has a painted grill, in fact there are two. An extra one for the compressor motor in the rear.
The Bedford Compressor Truck was followed by the Thames Compressor truck. I will put a link below in the comments.