Couldn't be so obvious as Glass Eye Studio ... could it?
And in the range of glass Button makers around the world, "Peacok Eye" is a well-known pattern but as I know almost nothing about Button makers, I can't comment on whether any of them made buttons for VERY large people's clothing!
I can't tell whether the "foil" inclusions are what, in modern terms, is called 'Dichroic Glass' (see discussion in the main Glass board). But the overall decorative effect looks like something that American "glass artists" would produce.
But as you can tell, I'm waffling, 'cause I don't know the answer :roll: