How about these two

[boris64]

Transtional and ??????

[Steph]

On the left possibly the kind of transitional which often showed up in Canada. 

 

Goldstone on the right, with an unusual band that I don't recognize.  Goldstone is a manufactured glass sphere often found in mineral sphere collections, not attributed to any marble-making company that I know of.  

[Steph]

(At least I think it is goldstone ... does it sparkle?)

[cheese]

I agree with goldstone. They often have bands in them of glass that didn't mix in or do whatever was intended. I think these can be both old and newer.

[boris64]

Yes very sparkly and thanks 

[I'llhavethat1]

23 hours ago, Steph said:

 Goldstone is a manufactured glass sphere often found in mineral sphere collections....  

Interesting, never had one before and always assumed they were a polished mineral sphere, similar to a tiger eye, Agate, etc.  Wouldn't have suspected glass.  Learned something new.

[wvrons]

You can also get the goldstone in small rectangle cubes, 1/2 inch by 1/2 inch by 3/4 or one inch long. We put them in the furnace at Jabo, trying to add goldstone or lutz to the marbles. Very little of it ever showed up. You can buy goldstone in chunks by weight 5lbs.- 10lbs. or more. The center or heart of these chunks always would strike or show on the marbles. The outer parts of the goldstone chunks were used to make oxblood.