Six (6) green Depression hex-optic 4" 9-oz. tumblers; maker unknown

Description

Here's six (6) cute little Depression-era flat tumblers.  I have no idea who made these (Federal, maybe?), but I'm reasonably confident they date from the 1930's (or maybe late 1920's).
Whoever made them or when exactly, they're each about 4" tall at the rim, and about 2-3/4" wide at the mouth.  They have a pretty hex-optic, honeycomb-like pattern in this glass, which hopefully shows up some in the pictures.  They are free of nicks, chips, fleatbites, etc.; there are some little glitches and imperfections on a couple you almost always see in machine-made glass of this era, but nothing terrible or you're going to notice except on close inspection.  They hold about 9 ounces when filled to the brim, so 'functional capacity' is probably about 7-8 ounces.  Sweet little things, nice color, pretty pattern, I've got way too much of this sort of thing around (and can't stop myself from buying more constantly), so these need a new home.
Any questions or comments, feel free to send me a message.
Thanks for looking, and be sure to check out my other auctions!