Which year holds the highest value of coins?

Answer 1

If you're referring to the value of coins as collectibles, there's no simple answer. No one year is "most valuable" because there are so many different varieties and denominations of coins, even within a single country. Some denominations may be struck in huge numbers in a particular year and be very common, while others may only have a few coins made in that same year and so are quite valuable. Sometimes it even comes down to mint marks and design differences. For example, six different kinds of cents were made in 1909. Lincoln cents that were made in Philadelphia and don't have the designer's initials are not expensive at all, while those made in San Francisco with the designer's monogram on the back are very rare, as are Indian head cents made in San Francisco.