A Weller pottery, various glaze test plate. There are 20 colors of glazes, each denoted with a number and ratio; image credit on full record.
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Weller Pottery; Plate, Test Glaze (20) Various Colors, 8 inch.
A Weller [pottery, various] glaze test plate. There are 20 colors of glazes, each denoted with a number and ratio. The plate is divided into two glaze... [more detail available via subscription]
