There are 5 names in this directory beginning with the letter K.
A key date coin is one that is more difficult to obtain than others in the series. A key date may include all coins from a single year or just one date and mintmark combination.
KM# or KM Number
Krause-Mishler catalog number for the coin type. See also Krause-Mishler.
Chet Krause, founder of Krause Publishing, and Cliff Mishler, then Editor-in-Chief at Krause Publishing, invented a catalog numbering systems for the Standard Catalog of World Coins references. These catalog numbers are widely used to identify coins by type.