antique wooden masks

I collect handmade masks I found this one at a SPCA rummage store I asked about it the lady said that someone brought it in and gave it to her and said it was very old to put a good price on it and left without telling her anything about it so it is sort of a mystery the style of it looks either Mayan or Inca but I'm sure it's not that old if anyone has any ideas please let me know it has no markings on it