This Product be not magnetized. From what metal can be manufactured this product? Hardly steel can form such composition. It not tin, because metal not soft on a product. I think that this silver...
Swedish Silver Decanter from 1770 ? The Decanter in the style of "Rococo"? I found only one hallmark «M» on handle of Decanter. Without other marks than the main "M" supposed to be the Swedish year letter 1770. But there is no the state control mark (three crowns) — after 1754....