Glaze test tile.
glazing (coating); color trial proofs; squares (geometric figures); ceramic tile; flat (form attributes)
Made at the College of Mining Engineering, State University, Grand Forks, N.D. stamped in back. B. 53, G. 406; B. 55, G. 408; B. 54, G.407; B. 56, G. 409 read from top left to bottom right. Same information is written on the edges of tile.
Good, slight crazing
"C MSC 460-1167 Side A" (2017). UND Pottery Collection. 1594.