Authentic antique silver can be identified by locating specific hallmarks or assay marks, usually found on the underside or handle of the piece. Look for the word “Sterling” or the number “.925” (indicating 92.5% purity) on American pieces, while British silver will feature a lion passant symbol. If the item is magnetic or has a copper/green tint where worn, it is likely silver plate, not solid silver.
Imagine you are at a dusty estate sale in Connecticut, digging through a box of tarnished cutlery. You pick up a heavy, blackened fork. Is it a hidden treasure worth hundreds, or just a dollar-bin plated piece?
The difference between a $5 fork and a $500 one often comes down to a magnifying glass and knowing exactly where to look. In this guide, I’ll walk you through the exact steps I’ve used for 20 years to separate the sterling silver from the scrap metal.
Where are the secret markings located on antique silver?
The first step in authentication is finding the marks. Unlike porcelain or glass, silver makers were legally required to stamp their wares in most countries.
On flatware (forks, spoons), check the back of the handle or the neck (where the handle meets the bowl). On hollowware (teapots, bowls), turn the piece over and check the bottom rim.
You are looking for small, impressed symbols or text. These are your hallmarks.

If the piece is completely unmarked, be skeptical. While some very old coin silver or Native American pieces might be unmarked, 99% of valuable commercial silver will have some form of attribution.
How can I tell the difference between Sterling and Silver Plate?
This is the most common question I get at every appraisal event.
Sterling Silver is an alloy containing 92.5% pure silver and 7.5% other metals (usually copper) for strength. It has intrinsic melt value and collector value.
Silver Plate is a base metal (like copper or nickel) with a microscopic layer of silver electroplated onto it. It has virtually no melt value.
Here is the quick checklist I use in the field:
- The Magnet Test: Silver is non-magnetic. If a magnet sticks strongly, it is steel or iron. (Note: Some base metals for plating are also non-magnetic, so this is just a first step).
- The Markings: Look for the word STERLING, 925, or 925/1000. If you see words like “EPNS” (Electro Plated Nickel Silver), “A1”, “Triple Plate”, or “Sheffield Reproduction,” it is plated.
- The Wear Pattern: Look at the high points of the design. Do you see a brassy or coppery color showing through the silver? That is “bleed through,” indicating the silver layer has worn off a plated piece.
Identifying these marks manually can take hours, especially with obscure makers. Using the Antique Identifier app, you can simply take a photo and get an instant result. It’s the tool I wish I had when I started my career.

What do British hallmarks mean on silver?
If you find a piece with a series of cryptic animal and letter symbols rather than the word “Sterling,” you likely have English silver. The British have the best assay marks system in the world.
A standard British hallmark row usually includes four or five marks:
1. Standard Mark: The Lion Passant (a walking lion) guarantees .925 sterling quality.
2. City Mark: Tells you where it was assayed (e.g., an Anchor for Birmingham, a Leopard’s Head for London).
3. Date Letter: A letter that changes every year, allowing us to date a piece to the exact year of manufacture.
4. Maker’s Mark: Initials identifying the silversmith.
5. Duty Mark: (Found on older pieces) A profile of the reigning monarch, indicating taxes were paid.

This system is invaluable for provenance. I once identified a dusty sugar bowl as an 18th-century Hester Bateman piece simply by decoding the date letter and maker’s mark—raising its auction estimate from $50 to $1,500.
What is Coin Silver and is it valuable?
Before 1870, the United States didn’t strictly use the Sterling standard. Instead, silversmiths melted down silver coins to create spoons and cups. This is known as Coin Silver.
These pieces are typically marked “Pure Coin,” “Coin,” “Standard,” or simply with the maker’s initials and city (e.g., “J. Shoemaker, Philad”).
Coin silver is usually 90% silver (slightly lower than sterling) but is often more valuable to collectors due to its age and historical significance. It is highly sought after in the current collector market.
If you are interested in other types of American craftsmanship, check out my thoughts on identifying early patterns in our guide on Fenton Glass Identification.
How do I determine the value of my antique silver?
Fair market value depends on three things:
1. Weight: For plain items, the scrap value is the baseline. You need a gram scale.
2. Maker: A spoon by Tiffany & Co. or Gorham is worth significantly more than a generic piece of the same weight.
3. Condition: Dents, heavy scratches, or monogram removal can lower value. However, never polish antique silver with abrasive cleaners before selling it. A rich, dark patina in the crevices is desirable. Over-cleaning is a form of damage that hurts the condition report.

Be careful with forgery detection. Unscrupulous sellers sometimes solder fake hallmarks onto plated pieces. If the mark looks “mushy” or glued on, proceed with caution.
Related Antique Identification Guides
Expand your expertise with these related guides: Limoges China Identification: Decoding the French Porcelain Backstamps, Fenton Glass Identification: How to Spot Rare Colors and Patterns, Depression Glass Identification: 5 Patterns That are Actually ValuableConclusion
Whether you are looking for replacement value for insurance or hunting for a bargain at a thrift store, understanding hallmarks is your best defense against bad buys. Keep your eye out for the Lion Passant and the word Sterling, and you will build a collection that holds its value for generations.
Don’t guess at your next estate sale.
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