Test tile divided into 21, 2x.75 cells, colors: Blues, greens, one yellowish green.
color trial proofs; blue (color); green (color); yellowish green; squares (geometric figures); cells (interior spaces); ceramic tile
Made at the College of Mining Engineering, State University, Grand Forks, N.D. stamped in back. Mattson, Nelson, Allen., S painted in blue. 1T, 2, 3, 4, 5, 6, 7, 7, 14, 21q, 21, 20, 19, 18, 17s, 16s, 15, 8, t. painted in blue on the outside edge of tile.
"C MTT 206-1120 Side B" (2017). UND Pottery Collection. 1575.