Okay, here is just the cup. It's 3 1/4" tall, 2 and 3/4" wide base rim. The flat end, is 1 and 3/8" and is slightly indented center.
Looking at sirlampsalot's site, the cup shown in the reprint is rounded. Looking at the Green Valley auction picture, it's flat, like mine.
I can't imagine what other purpose this cup might have - anyone?
I assume the center piece as shown in both examples is just decorative?