They're made in Italy, I think. I have 2 Prussian cuirassiers from this maker, depicting one from 1756 and one from 1870. They're klunky in their sculpts, and the paint jobs are generally execrable. The size seems to be around 56mm, comparable to classic Stadden figures, but again, because the sculpting is so coarse, I don't expect that to be too consistent. I've thought about stripping mine and repainting them.
I would take a look at Mirof's spreadsheet on manufacturers, if I were you, and see if you can find the maker listed there.
Prost!
Brad