Jabo Diameters Question

[The Nickel Guy]

From what I have found, there are perhaps some pee wees, 5/8", 3/4" and 1" experimental runs and that's about all I know of Jabos.

I have a few 7/8", 9/10" and a 1 1/8" marble that sure do look like Jabo. Is this possible?

Might I have something odd here?

I can find some very similar examples in  runs that strongly resemble these but all in this picture remain unidentified.

Here's a group picture, All sizes I mention and those in question are found in this picture. Thank you!

[Nantucketdink]

JABOs range from 5/32 to 1 3/8

[The Nickel Guy]

Thank you!