Mayan Aztec Calendar Medallion Malachite? Composite Round Wall Art Vintage Set

Description

I don't know if these three pieces were originally purchased together as a set, but I assume they were.  These are really heavy substantial pieces.  The busts are some kind of stone for sure.  The calendar is 14.5" in diameter.  It has a very tiny ding to the right of the bottom center on the inner ring.  It's barely noticeable but should be mentioned for accuracy. The busts are each approximately 6" tall. Please see all pictures as they are the best descriptors.
When you buy a vintage item you aren't just buying an object, you're sharing a piece of someone's past.