Proof silver coins are the top quality coins of any issue. Proof coins are manually and individually coined in a specially designed and air conditioned environment. Laboratory coats, hair ties, gloves, sticky mats on the floor, lint free material to wipe dies, and fans continually blowing air across the die in the coining presses are some of the measures taken to minimize the risk of blemishes on the coins. Proof coins are not meant for circulation but as collectors items and for investment purposes. Proof silver coins are great for investment over the long term.