I have a few spoons not sure what there worth or if there worth anything, copper

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Iwant to sell them but dont want to say there silver or silver plated or they my be stainless steel, or the copper could be brass. They are Australian spoons eg;parliament house canberra stamp says peninsula plate epns a.i war memorial canberra same stamp. Osterreich stamp rsilbert silverware copper scenic railway katoomba falls and lots more.