Proof sets 1984-1993 "purple box"
Proof coins have a brilliant mirror-like finish. The term "proof" refers to a specialized minting process, which includes manually feeding burnished
coin planchets into presses fitted with specially polished dies. Each coin
is struck multiple times so the softly frosted, yet detailed images seem
to float above a mirror-like field. The 5 coin sets, 1 cent, 5 cent, dime,
quarter and half dollar, from 1984 through 1993 were issued in a purple
box.
1991..$7.00, 1993..$6.00