What you need to know about junk silver (U.S. silver coins that predate 1964) is that they are primarily valued for the amount of silver in them. They have little numismatic value. Silver bullion and collectible coins today typically offer greater silver content plus value based on rarity, mintage, historical significance, design, condition, and more.
Junk silver is appealing for its silver content, particularly those coins produced between 1935 and 1964 that were made with 90% silver. If you only care about the silver content of a coin and nothing else, then junk silver may be an attractive option. However, if you’re interested in silver coins with higher silver content AND numismatic value, then junk silver may not meet your standards or needs.