Silver Hallmarks Explained: How to Read and Decode Every Mark

Authentic silver hallmarks are official stamps that verify the purity of the metal. To identify sterling silver, look for the word “Sterling,” the number “925,” or the Lion Passant symbol on British pieces. These marks guarantee the item is 92.5% pure silver, distinguishing it from silver plate, which often bears marks like “EPNS,” “A1,” or “Triple Plate.”

Imagine you are at a crowded estate sale in Charleston, South Carolina, digging through a box of tarnished cutlery. You pick up a heavy, blackened spoon. Is it a $5 piece of junk or a $200 treasure from the 18th century?

Most people toss it back, assuming it’s just old kitchenware. But if you know where to look, those tiny, worn impressions on the handle tell a complete story of provenance, age, and value.

What are silver hallmarks and why do they matter?

Hallmarks are not just random logos. They are a consumer protection system dating back to the Middle Ages.

An assay mark guarantees that the metal has been tested and meets a specific standard of purity. Without these, you are essentially flying blind.

In the collector market, proper identification creates the difference between fair market value and scrap value.

How can I differentiate Sterling Silver from Silver Plate?

This is the most common question I get asked during an appraisal.

Sterling silver is an alloy of 92.5% silver and 7.5% copper. It has intrinsic bullion value.

Silver plate is a thin layer of silver over a base metal like copper or nickel. It has almost no melt value.

Look for these red flags of silver plate:

• EPNS (Electro Plated Nickel Silver)

• EPBM (Electro Plated Britannia Metal)

• Triple Plate or Quadruple Plate

If you see the number 925 or the word Sterling, you are likely holding solid silver.

Identifying these marks manually can take hours, especially when they are worn or obscured. Using the Antique Identifier app, you can simply take a photo and get an instant result.

How do I decode British Silver Hallmarks?

British hallmarks are the gold standard (pun intended) of the industry. They usually consist of four or five symbols in a row.

Here is the code to break them down:

• Standard Mark: The Lion Passant (a walking lion) indicates .925 sterling silver.
• City Mark: This tells you where it was assayed. A leopard’s head is London. An anchor is Birmingham. A crown is Sheffield.
• Date Letter: A specific letter shape and font style corresponds to a specific year.
• Maker’s Mark: The initials of the silversmith.

Pro Tip:

• Date letters cycle through the alphabet. A capital “A” in a shield might be 1756, while a lowercase “a” in a circle might be 1856. You must check the font and shield shape carefully.

What about American Silver marks?

American silver is less regulated than British silver but easier to read.

Before 1868, American silversmiths often used Coin Silver (90% purity), marked as “Coin,” “Pure Coin,” or “Standard.” This technique is similar to what we cover in our guide on Sterling Silver vs. Silver Plate: The “Ice Cube” Test and More.

After 1868, the US adopted the Sterling standard. Great makers like Gorham, Tiffany & Co., and Kirk & Son will almost always stamp their full name clearly on the base.

How do I spot a fake or forgery?

Forgery detection is a critical skill. Unscrupulous sellers sometimes solder hallmarks from a small spoon onto a large, silver-plated teapot to increase its value.

Look for:

• Solder lines: Faint lines around the hallmark area.

• Bubbling: If the surface looks like it has blisters, the plating is lifting. Sterling does not bubble.

• Bleeding: If you see a reddish/brassy tint showing through the silver, the plate has worn away.

Does polishing affect the value?

Be very careful. Over-polishing can ruin the patina and crispness of the marks, which hurts the condition report.

A light clean is fine, but aggressive buffing can strip the detail from intricate chasing or repoussé work. Proper conservation maintains the history of the piece.

If you are looking for an auction estimate, leave the tarnish alone. Dealers often prefer to see the age.

Related Antique Identification Guides

Expand your expertise with these related guides: Antique Teapot Identification: Finding English Silver and Ceramic Marks, Sterling Silver vs. Silver Plate: The “Ice Cube” Test and More, Decoding British Silver Hallmarks: How to Read the Lion and Anchor