I bought a junk pewter lot for a modest amount of money. As I sorted through the stuff, one item was a small pepper mill that was stamped Peugeot on the steel grinder part. A bit of googling suggests that this is a vintage silver grinder, but it sure looks like pewter. It is only a thin sheet of metal over a wood body, so we are not talking about more than a few ounces at best. Is there an obvious way to figure out what the metal is (silver or pewter)? Toss it in the pot when I melt down other pewter and see if it stays solid? It looks like the melting point of sterling silver is over 1600 degrees, so I can't see what harm tossing it in the pot would do considering tin melts under 500 degrees.