Just so you know ford
never stamped flathead v8 blocks with serials, Flat 4s (model a) yes.
But it's a stamping. A lot of the stamps used there are not ford stamps. Well really none of the characters are correct. Maybe the later 4 (true ford stamps have serifs) but certainly the star. Probably a re-builders stamp detailing the rebuild. Now it's for you to figure out!
Rebuilt
Canadian block
4" crank.... just to get you thinking.