This is a Robinson Ransbottom blue sponge pattern low 1 Pt Jar without the lid. It is 4 1/4" wide and 3 1/4" tall. The jar holds 1 pt or 2 cups. It is in excellent condition with no chips or cracks. The base is stamped "R.R.P.CO. Roseville, O. USA." The Robinson Ransbottom pottery company was located in Roseville, Ohio. It is not the same as the Roseville Pottery Company. Blue Sponge is a discontinued pattern.
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Happy New Year! Best Wishes for a happy, healthy, and prosperous 2017.