Vintage AZTEC Opaque Tonala Mexican Art Pottery Vase UNUSUAL SIGNATURE

This Mexican art pottery vase is approximately 8" high x 6" widest diameter. Aztec ware. No chips or cracks. Tiny bit of paint loss here and there. Not much.

Strange figural signature. I'm not sure which view is right side up. Please view photos carefully. Anyone with any info about this piece, please let me know what you think. Thanks for looking.