University of Virginia Library

Chaco Black on White[7] (See Plates 5B and 11)

Hardness: 4.0 to 4.5, mainly 4.5.

Comparison and discussion: The chief characteristic used in distinguishing
this type from Gallup Black on White is its even, well-smoothed,
well-polished, decorated surfaces.

 
[7]

See Hawley, 1936, p. 43; Hawley, 1934, p. 41.