I'm sure they are new, too. I just don't know how new. So far I'm inclined towards the 1950s, maybe the 60s or 70s. Could be later of course. But I can just hear some shifty guy saying to a small-time glassworker:
"Hey, I need a bunch of colorful marbles for a circus / carnival target game, Can you make me a bunch?"
Whatcha mean by a bunch?
"Well, like a bucket full?"
Or maybe it's just because my gentleman friend's maternal grandfather was a Gypsy animal trainer with a traveling circus during the 1950s, in Austria, so I'm partial to stories like that.
Anyhow, they're bound for my Cabinet of Curiosities . . .