Hello, I'm an expert in numismatics, the study or collection of currency, with a particular focus on precious metal content in coins.

There are several types of coins that are known to contain 90 percent silver. Some of the most notable ones include:


1. U.S. Silver Dollars (from 1794 to 1935) - These coins were minted with a 90% silver composition.

2. U.S. Half Dollars (from 1794 to 1963) - Prior to 1964, these half dollars were made with 90% silver.

3. U.S. Quarters (from 1932 to 1964) - Similarly, quarters minted before 1965 were 90% silver.

4. U.S. Dimes and Mercury Head Cents (from 1916 to 1945) - These coins also contained 90% silver.

5. Canadian Silver Dollars (from 1935 to 1986) - Canada also minted silver dollars with a 90% silver content.

6. British Silver Coins - Certain British coins, like the pre-1920 silver sovereigns and half-crowns, contained 90% silver.
7.
Mexican Silver Coins - The Mexican 8 Reales coins, known as "pieces of eight," were often 90% silver.

It's important to note that the purity and metal content of coins can vary by year and mint, so it's always a good idea to verify the specifics of any coin you're interested in.

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Besides investment purposes, people buy junk silver coins (like pre-1965 half-dollars, quarters and dimes) as a means of survival: in case of a total collapse of the U.S. dollar. Other reasons include: Hedge Against Inflation �C A 90% junk silver quarter was worth 25 cents in 1964.read more >>