You've found vintage Rubbermaid spatula #1972! This white plastic spatula from around the late 1980s appears to be the kind of hard plastic (not rubber) that is microwave- and oven-safe to 400 degrees (like Ultratemp kitchen utensils), though it is not specifically marked as such. It measures 12 3/8" long and 4 3/8" at its widest.
This vintage Rubbermaid 1972 wide spatula has scratches from normal use, a very small melt spot on one edge, and a super-tiny chip on the tip.
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