slang for a holder holding a coin that has been encapsulated by a coin grading service. Usually, the coin will graded, authenticated, and encapsulated in a sonically sealed holder, often by a 3rd party grading service. See PNG, NCG, ANACS, PCGS.

The process of sending a coin to a third-party grading service to have it authenticated, graded, and encapsulated in a sonically sealed holder.