1.78 grams 25 paise 1873 1909 1934 1936 lincoln cent 1942 1952-d lincoln cent 1955 1957 1957 d 1959-d lincoln cent 1961 1964 1964 cent 1964 d 1967-d 1968 1969-s/s 1970 1970s 1971-s 1972 1983 lincoln cent 1991 lincoln cent 1993 2006 2008 2018 acid attribution barber broken l cherrypicker' guide chile clash die class iii class viii clipped planchet clo-002 close am clump coin shows commemerative cud d/d/d damage ddr denver die chip dime dime errors doubled die doubled dies dryer coin education error jefferson nickel lamination lincoln lincoln cent morgan dollar possible errors rpm spitting eagle study thin planchet urs virginia virginia coin convention