RE: Deisel engine ID help.-
G'day
Looks like an English Frog 1.49cc "Vibramatic" diesel from the 1950s. I used to have one of these. They run quite well. They have a flutter valve induction system like the small Cox engines.
There was also a Frog 150 which looked similar but had a conventional front induction arrangement. One of these was the first engine I ever started.
Cheers
Mike in Oz