15 inch plattter Red Wing 48

I have a cream 15 inch platter with a scalloped edge & it is marked Red Wing USA 48 on the back. Not a stamp, but molded in the rim of the base. It has a matte finish. I would like to know the pattern name (altho it is not patterned) and what the value is. Joan


Answer: This plate is not from the dinnerware lines. Ray Reiss’ first art pottery book shows shape 48 on page 229, figure 505. It is described as a 12.5 inch plate made to go with two figurines numbered 46 and 47. I do not track art pottery values but would guess this plate is worth $25-50.