1. Color: Silver has a whiter color, while cupronickel has a more yellow or brassy tone. However, this difference can sometimes be subtle and be harder to notice in older, circulated coins.
2. Weight: Silver is denser than cupronickel, so silver sets will typically weigh more than cupronickel sets of the same size and number of pieces.
3. Magnetic properties: Cupronickel is slightly magnetic, while silver is not. You can test the magnetic properties by holding a magnet close to the sets. If the sets are attracted to the magnet, they are likely cupronickel.
4. Sound: When you drop a silver coin on a hard surface, it will produce a higher pitched ring compared to a cupronickel coin.
5. Hallmarking: Silver sets are often hallmarked to indicate the purity of the silver. Common silver purity standards include "925" which indicates 92.5% silver, and "Sterling" which also indicates 92.5% silver. Cupronickel sets do not typically have hallmarks.
6. Minting details: Some mints may use different designs or markings to distinguish between cupronickel and silver sets. For example, the United States Mint uses a "P" mint mark for Philadelphia-minted cupronickel coins and an "S" mint mark for San Francisco-minted cupronickel coins. Silver coins from the US mint typically do not have a mint mark.
If you are not sure whether a sets of coins is made of silver or cupronickel, consult a reliable coin dealer, reference book, or online resource for specific details about the sets in question.
