Green-based banana as Bogard? I wonder if I will remember that next time I see one similar. I've tended to assume Master on such. I wonder if I already knew better ... the notion of Bogard bananas is starting to maybe sound like something I might have heard of before ....
All I can say is they're nice. I don't think they're very new.
Those styles were introduced in America in the 1930's. They could have spread to Asia or Europe or South America in later decades.
(I just remembered South America. There were some rather American-looking marbles made in Brazil and/or Argentina. I should have remembered it before during our attempts to list all the possible sources for your fascinating marbles.)
You still have some very nice ones. I LOVE this one. The trading idea intrigued me, but I just know myself and know I'm not in a good position to trade.
They're beautiful. I suspect Asian and would guess maybe 1960's. That's a wild guess on the decade. But mostly I'm saying I don't think they are very new.
Those greens on the top row? I understand your uncertainty. I'm gonna go with Akro ... or Vitro. The long straight seams and the shredded look make me think not Master.
I am pretty sure that there were Vitros sold in Europe which look different from what we got here.
I seem to recall seeing a labeled Vitro bag which looked foreign.
So there's still a possibility of some of the foreign-looking marbles being American ... but I don't know how we could know ... if they weren't the ones we find in packaging here.
The colors make me think of the Pelt Tootsie Roll.
I hadn't seen the size before now, which could really change things up. But I'm not letting that stop me from mentioning the Tootsie Roll before I step back to the sidelines.
Seriously ... you might be sitting on a treasure trove of beautiful Akro-like non-American marbles which are totally foreign to us.
You may be our newest source for research into marbles which are abundant in the Netherlands but which we don't know about yet over here.
"Broken cork" refers to a Peltier where the ribbons connect in a way that makes it look like a corkscrew.
I think you do have an Akro. Let's call it a "messed up cork".