The opaque white base on the cupper left mostly appear to be Peltier Rainbos and the rest on the lower (R) side are all cat eyes, (Japanese manufacture IMO)
I think it'll be considerably more than $300, I've seen 9.7 or better examples between 7/8ths and an inch go for tens of thousands, of course that's w/ no damage but still even w/ ?? Here's a pic of a7/8ths example from a 2012 auction
LINK :: https://www.peachridgeglass.com/2012/12/rare-pink-opaque-lutz-marble-sells-for-25800/
"Welcome to Marble Connection Heath"
Man what a killer, I commented on your other post already. At least you know what you have your hands on, thanks for postin pix of such a rare mib
Wow !! Don't drop it, an antique German handmade Banded lutz. Not just any lutz but the rarest color there is "pink" not sure of the exact value but definitely way over a grand even w/ damage. VVVHTF (very, very, very hard to find) a once in a lifetime find (if your lucky) Man what a killer find.
"Welcome to Marble Connection Emily"
Great posts and pix, views, seams etc. nice to have you aboard, keep right on postin to your hearts content. Again "Welcome"
Yes, a Rainbo, they come in just about every transparent color you can think of, some more common, some VHTF, a good marble to collect, you'll never reach the end of Rainbo color combinations or variations, BTW Nice mib Adam