Conservation
About Uncirculated (AU)
Casi sin circular (AU)
Sheldon grades 50–58: the note or coin saw little circulation; light handling or a faint fold remains, but the design is still sharp. This collection includes, among others, PMG 50, 53, and 55 About Uncirculated.
See also: Extremely Fine (EF) , Uncirculated (UNC) , Sheldon Scale , Fold vs. crease