Does the marble in the OP look like most vintage marbles? no. Could it still be a vintage marble? yes. Will anybody ever know for sure? probably not. Still fun to discuss and see examples tho.
A good portion of my 'old' handmades don't react under UV. Some are brighter than others, some don't appear to glow at all. As far as the faceted pontil goes, I'd expect a fair amount of variation or inconsistency in technique (picturing some guy just trying to avoid buzzing off his cramped fingers on a big grinding wheel all day). <----that mental image could be totally wrong.