vintage drinking glasses, set of 8 tumblers Blenko art glass applied medallion seals

We've been told these vintage tumblers are West Virginia glass (Blenko? Kanawha?) but we've never seen anything like them before, and have been unable to find them anywhere.

They're clear frosted glass tumblers with clear green glass blobs applied and pressed with different design - two each of sun, ship, fish and rooster or weather vane designs. Mod glasses with rather Early American motifs, most likely 1970s, we think!

The glasses stand about 3 1/2" tall, and are all in excellent condition without damage or any visible wear from use.