A Maya polychrome vessel, Late Classic, ca. A.D. 550-950

brightly painted, one side with a young lord, perhaps as Hero Twin observing the codex with human mask ontop, the lord with high swept long coiffure and large disc pendant with dangles, the reverse with a turbaned lord holding a plumed implement, perhaps perforator, wearing tiedye loincloth, with large pillow behind and swaggered curtains above, a skyband encircling the rim. 

Florida Collection, acquired in 1971

Cf. mayavase.com, K1787 and K4929, for vessels of highly similar style. The skyband is used to denote areas of sacred space where bloodletting or other ritual activities took place.