The seams, the colors, the orientation of the color ribbons ... and more of a generic UV, not particularly an Akro UV. I have UV in my obvious Masters.
Those are reasons for my Master vote.
Your enthusiasm has been such a delight. You've made me want to go to Standing Stone ... or drop in at whatever park you're working at if I ever find myself in Tennessee.
The glass doesn't look slag-like to me ... so I'm not sure what I wanted to guess the Peltier Co. meant it to be.
And obviously whether it is Pelt or not is still up for debate.
Ha!
I have taken screenshots and blown them up to try to figure out marbles in other shows -- Little Lord Fauntleroy for one -- but I didn't know there were any in To Kill a Mockingbird.
My grandfather's middle name was the numeral 7.
I hung out after work with a boy for months before we learned we were second cousins. He was embarrassed because he had almost asked me out on a date.
Eli and Peyton Manning are also my cousins.
The color is right for a Christensen Agate, but I don't recognize the classic structural signs of Chrissie so I also have to consider WVS, maybe Alley.
Just popping in for a minute ... don't have any links ... but I do remember references to kids in the olden days going to the bike shops to get ball bearings for play.