I found this pitcher at a thrift store today and took a chance on whether it was pewter and also on the weight ( I'm away from home and away from a scale today). It bends, thunks, and passes the fingernail test. The second picture shows what might be the remains of a Hallmark inside the lid.
Based on some searching I think it might be 18th century. It's probably not worth much if any more than the rotometals equivalent, but I don't know if I can bring myself to melt this if it is that old.
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