This was my grandfather's. It looks to me like it is Casas Grandes, perhaps Ramos Polychrome. I am not an expert in southwestern pottery, though, so if you know more I'd be happy to hear it.
For more on the Casas Grandes culture and pottery, check out: https://www.beloit.edu/logan_online/exhibitions/virtual_exhibitions/north_america/southwest/casas_grandes/casas_grandes.php