Polychrome Acoma Jar

This graceful vessel triggers admiration:

Someone dug the clay, added temper, made it pliable with the addition of water.  A puka helped form the bottom to which coils of clay were mounted.  Its design was conceived to harmonize with the shape of the jar.

All with no identification of the maker.

"Unknown artist" is appropriate when a work of art is unsigned and a supported opinion about who made it is not available (on Savvy Collector).. "Attributed to" precedes the name of an artist when information suggests that it likely was made by that artist (on Savvy Collector).