60s mod vintage roly poly drinking glasses, amberina red orange Morgantown crinkle glass

Wrinkled crinkled texture glass roly poly glasses, Morgantown glass Crinkle or El Mexicano pattern? These are colored glass (not an applied color finish) in amberina, shaded red - orange amber glass.

It's a set of four round tumblers, a little over 3" x 3". The colors do vary slightly as these are hand-crafted, but all four glasses are in excellent condition.