Vintage pierced silver plate (reticulated) trivet or coaster – marked "Silver Deposit on Nickel Silver" – likely from early 1900s

This is not sterling silver but silver deposit plating over nickel silver (also known as German silver). The piece is most likely a trivet, wine coaster, or underplate. The pierced/reticulated design was popular from 1890s–1930s, especially in American and European silverplate. The hallmark style suggests a company like WMF (Germany) or similar firms using triple-shield marks, but since it's not sterling, intrinsic metal value is low. Collectors of silverplate may value it for the ornate cutwork.