USA
Oregon
Capital City:Salem
Current normal series (1988- ), original colours used since 1 July 1988 (from PDH 001) till 30 November 1989
Current normal series (1988- ), sample plate, current colours (since 1 December 1989 from QNM 001), 3 letters-3 numerals until 2004
Former normal series (1980 - 1988), All serial
Old normal series (1975 - 1979), C (first letter) = MAR = March (month of issue)
Old normal series (1964 - 1974), B (first letter) = FEB = February (month of issue)