They are not "errors" per se since the engraver did not make the mistake while making the dies and a step in the minting process was not omitted. Rather it is a state of Die Deterioration. What you have is a die crack/or the early stage of a Retained Cud. These examples can bring a premium depending on the size/state of the crack or Cud along with other variables associated with a specific series.
To realize full $$$ potential you seek out variety collectors of said series. This is a very lucrative niche. I you had it holedered and consigned to Heritage, who attracts high traffic and variety collectors, you would realize the coins full potential with little effort on your part. Below is an example of a 1875 CC Seated dime with an obverse Cud that I cherry picked for $7. There or only 6 known examples and I ended up selling to a well known Seated collector to use as a plate coin in his book.

To realize full $$$ potential you seek out variety collectors of said series. This is a very lucrative niche. I you had it holedered and consigned to Heritage, who attracts high traffic and variety collectors, you would realize the coins full potential with little effort on your part. Below is an example of a 1875 CC Seated dime with an obverse Cud that I cherry picked for $7. There or only 6 known examples and I ended up selling to a well known Seated collector to use as a plate coin in his book.
























