Every Parker hammerless shotgun in grades VH-GH I have examined in the last 45years has had shields made from nickel silver/german silver which is an alloy of zinc and nickel. It doesn't tarnish readily and is soft or easy to form. It is cheap, is silver in color, and exhibits a pale yellow cast. Also if your hammerless Parker has a metal front sight it should be made from nickel silver not brass as many American manufacturers used for there front sights.
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