Coin World Premier coin holders come in 30 sizes and fit virtually every US coin made as well as many tokens, medals and world coins. The holders consist of a dark green elastic insert that fits between two clear snap together covers. When assembled the holder resembles the type of holder used by grading companies for certified coins. Coin World holders are an economical way to make your non-certified coins fit in with and store similarly as your certified coins. Holders are sold in packs of three holders and include inserts for labeling the coins.