How to Identify Sterling Silver

Learn how to identify authentic sterling silver using visual characteristics, maker marks, and expert tips. Based on 336 sterling silver items in the InstAppraisal archive.

🔍Key Identification Characteristics

Visual and physical traits that help identify authentic sterling silver

1 Warm, white-gray luster that develops a dark patina (tarnish) over time from sulfur exposure
2 Heavier than silver-plated items of the same size — sterling is solid silver throughout
3 Soft enough to show wear on high points after decades of use — spoon bowls thin, fork tines bend
4 Hallmark stamps are crisp and deeply struck on genuine pieces, not shallow or blurry
5 Produces a clear, high-pitched ring when tapped — plated items sound duller
6 Monograms were commonly engraved by the original owner — removal reduces value

🔎Common Marks & Labels

Stamps, signatures, and labels to look for on sterling silver

"Sterling" or "925" stamp — the legal standard indicating 92.5% pure silver
Lion passant hallmark (British sterling standard since 1544)
Maker marks: Tiffany & Co., Gorham (anchor + lion + G), Reed & Barton, Wallace, International Silver
Date letter stamps in British hallmark system — a letter in a specific shield shape indicates the year
Pattern name or number stamped on the back of flatware pieces

💡Expert Tips

Tip 1

Use a magnet: sterling silver is not magnetic. If a magnet sticks, the piece is plated or not silver at all. Note that clasps and knife blades may contain steel, so test the body of the piece

Tip 2

Look for "EPNS" (Electroplated Nickel Silver), "A1," or "Quadruple Plate" — these marks indicate silver plating over base metal, not sterling

Tip 3

Weigh the piece and multiply by the current silver spot price per troy ounce — this gives you the minimum melt value, which sets the floor for any sterling item