IS IT REAL? PRE COLUMBIAN ATEC(?) FIGURE PLAYING WITH BALL

I found this at an estate sale a few years back. The lady's husband had passed away & she and her kids were selling everything including the house to buy her a smaller condo since he was alone now & the house was too big.
I saw this piece (as well as another that I also bought) in a glass case on a shelf. The lady holding the estate sale told me her husband was a history professor and archaeologist who took numerous trips to S. America for business & pleasure - he brought this piece back with him on one trip, but she had no idea when; She also knew nothing about it.
It looks like a Aztec/Mayan person to me (look at the face in 3rd photo) - did they make pieces like this?
Is there a way to tell it's age/if it is real?
I've kept this because I really think it's very old & very unusual, but I have to sell it to make home repairs & the more I know about it, the better I know what a fair price is (Or if I need to contact Christie's!)
It measures 4" x 3"
I greatly appreciate any help

 

A really lovely figurine.
Those powdery pigments are often seen on Maya figures. Other cultures usually used a very smooth finish, or natural, plain terracotta.
The Maya also had bearded figures, and of course the sacred ball game. But it is hard to tell if this is pre-Columbian or later, I would have to feel and smell it.
It is probably best to contact a museum.