Originally Posted by francophile

Huh. Interesting, I would've expected to find some kind of stamping of some sort on it, sometimes stampings are ultra-light, upside down, partial. Weird it would have a stylistically similar Columbus dove on the BB shell if no Columbus tubing. So, like, no rifling in the main triangle tubes or fork?

That 531 decal, the thick paint, highly probable those were added later and the decal doesn't match the tubing.