Ya gotta cross the Mississippi to find some of the source(s).
Stuff that comes out of a bucket is always a good solid source.
It's a kewl timeline.......yyyyears of make'n marbles !
The closest I have are a few of these.
They're really twisted up...but have the
construction of a 4 or 5 ribboned Rainbo.
NLR.......eh ??? I just look for the various Dark Blue/Gray bases.
Bottom right hand corner.
http://cgi.ebay.com/ANTIQUE-TOY-VINTAGE-MARBLES-1LB-LOT-E_W0QQitemZ270500203680QQcmdZViewItemQQptZMarbles?hash=item3efb118ca0