I'm practically positive that it's too early for Akro. As in 99.999999999% sure.
Peltier might have had Peerless Patches at that time, but they would have been nice ones.
So I started to wonder if these might be Japanese marbles.
Now it looks like I'm seeing some cat's eyes in there too.
Too weird.
At first I wondered if the magazine date might be wrong, but no, there is apparently no typo there. It's 1929.
That marble assortment is Just. Too. Weird.