Nine Mile polychrome was first identified by Jack and Vera Mills in the 1940's (Mills and Mills 1940-1949a, cited in Neuzil and Lyons 2006:22) at the site after which it was named: Nine Mile in the San Simon Valley. It is also known as Ninemile Polychrome: Gila Variety and  Ninemile Polychrome: Tonto Variety. It can be found from the Cliff Valley to Perry Mesa, as well as from the Middle Verde Valley out to around Douglas, in Arizona. It is generally more prevelant in the southeastern portion of it's geographical range. The type dates to around 1375-1450 CE. 

The type occurs strictly as recurved bowls (Lyons and Clark 2012:20), and according to Neuzil and Lyons (2006:23-25), "...exhibit a banded design field on the interior surface, at the rim.This design field consists of black painted decoration on a wide band of white slip. The Nine Mile configuration differs from the Cliff configuration in that the remainder of the interior surface is slipped red and bears no painted designs... ...The exterior surface of a Nine Mile Polychrome bowl usually bears a Gila or Tonto configuration design." 

More information provided by American Southwest Virtual Museum: 

Ninemile Polychrome is a type of Roosevelt Red Ware found primarily from Cliff Valley to Perry Mesa, and from the middle Verde valley to Douglas, Arizona.  This type is rare in the San Pedro valley, Tucson Basin, and Tonto Basin, and is more common in the far southeastern portion of its geographical range. 

Archaeological Culture: Salado

Date Range: A.D. 1375-1450

Construction: By coiling.

Firing: In an oxidizing atmosphere.

Core Color: Brick-red, tan, gray to black.

Temper: Moderately abundant fine water-worn sand.

Surface Finish: Slipped and polished.

Surface Color: Red exteriors and interiors where not painted.

Forms: Recurved bowls; occasionally semi-flaring incurved or semi-flaring hemispherical bowls.

Decoration:

• Paint: Black over white and/or red.


• Pigments: Black: carbon, red: hematite, white: kaolin.


• Design: Interior: banded design field at the rim; slipped red below design; exteriors usually painted with Gila or Tonto designs, sometimes undecorated, sometimes decorated with only a thin band similar to the interior.
  Comparisons: Similar to Cliff Polychrome in that both occur only as recurved bowls and have a banded design field on the interior surface at the rim. Nine Mile Polychrome differs in that the interior surface below the rim design is slipped red and undecorated.

Other Names: Ninemile Polychrome: Gila Variety, Ninemile Polychrome: Tonto Variety, Nine Mile Polychrome.

Lyons & Clark (2012:20): "recurved bowls only; exterior: decoration like Gila or Tonto Polychrome jars, interior: slipped red except for band of black paint on white slip near rim."

• Lyon's & Clark description of decoration on Gila Polychrome jars: jar exterior: "(1) single horizontal band of white slip and black paint, jar base (below black-on-white zone) slipped red, or (2) multiple, horizontal stripes of white slip and black paint separated by stripes of red slip." (2012:21);


• Lyons & Clark description of decoration on Tonto Polychrome jars: "jar exterior: (1) single design field comprised by panels or meandering ribbons of black paint on white slip surrounded by red slip, (2) separate design fields for neck and body, each comprised by panels or ribbons of black paint on white slip surrounded by red slip, or (3) separate design fields for neck and body: one comprised by panels or ribbons of black paint on white slip surrounded by red slip, the other consisting of horizontal band of whtie slip with black paint." (2012:20)