Start with the country and date
The quickest clue is the issuing country and the year. Many nations used silver for everyday coins until the early to mid-20th century, then switched to cheaper metals. Examples include British coins dated 1946 or earlier (which are likely silver or part-silver) and Canadian dimes, quarters, halves and dollars dated 1966 or earlier (1967 and 1968 are mixed or lower-silver, so check individually). Our guide to silver coins by country lists the common cutoffs.
If you cannot read the coin, look up the script and designs in a catalogue or an identification app, then confirm the composition in a reference.
Look for fineness marks
Unlike US circulating coins, many foreign silver coins are stamped with their fineness. Common marks include:
- .800 (80% silver)
- .835 (83.5% silver)
- .900 (90% silver)
- .925 (sterling silver)
- .999 (fine silver, mostly modern bullion)
Marks may also be written as 800, 900 or 925, or on the edge. A mark helps but is not proof, because counterfeits can copy it.
Weight, size and edge
Compare the coin’s weight and diameter with the catalogue listing for that type. Silver is denser than most coin metals, so a coin that is noticeably light for its size may be plated or a different alloy. A digital scale accurate to 0.01 g is helpful. Also check the edge for a visible layer, seam or copper-colored band, which can indicate a clad or plated coin.
Magnet test
Silver is not magnetic. If a strong magnet pulls the coin firmly, it is not silver. However, a coin that does not stick could still be brass, copper, or aluminum, so the magnet only rules coins out, never confirms them.
Ping test
Balance the coin on a fingertip and tap it lightly with another coin. Silver tends to ring with a clear, sustained tone, while base metals sound duller. This is subjective and takes practice, and worn, damaged or cracked coins may sound different.
Vinegar and tarnish
Some guides suggest vinegar as a test, but it is not a dependable way to prove silver. Vinegar may clean tarnish or react with other metals, and it can harm a coin’s surface and value. We recommend avoiding it on any coin that might be collectible. Tarnish alone is also not proof, since silver can tone to gray or black and other metals darken too.
Limits of home tests
- Silver-plated coins can pass a magnet test and may look correct.
- Counterfeits can copy weight and fineness stamps.
- Rubbing, cleaning or scratching a coin to test it can reduce collector value.
Use several checks together and treat any single result with caution.
When to get a professional test
If the coin could be valuable, ask a reputable dealer or numismatist. They can use tools such as X-ray fluorescence (XRF) analyzers or specific gravity testing, which do not damage the coin. Also see how junk silver is priced if you have a lot of worn foreign silver and are thinking of selling by weight.
Frequently asked questions
Are all pre-1964 coins 90% silver?
No. The 90% figure applies to certain US coins dated 1964 and earlier. Other countries used different alloys, such as 80%, 50% or 92.5% silver, and many coins were never silver.
What is the quick test for silver?
A magnet and a ping test are the simplest, but neither proves silver. A fineness mark, correct weight and a professional test are stronger evidence.
How to test silver with vinegar?
We do not recommend it. Vinegar is unreliable for identifying silver and can damage a coin.
What foreign coins are silver worth?
It depends on the coin’s silver content and the current silver price. Many worn foreign silver coins are valued by weight, while scarce or high-grade coins can carry a collector premium.