P.S.C. truck


Image from a magazine advertisement
showing a P.S.C. plate (top) in conjunction
with a weight code L plate
Public Service Commission generally regulates Commercial and For-Hire transportation, among many other things. As far as license plates are concerned, PSC plates were generally the precursor to Apportioned plates, though there are some differences and there was an overlap in issuance 1986-1992. In most cases PSC plates were used in conjunction with other plates, usually a weight truck plate. Today, a system exists of a sticker applied to the side of a tractor-trailer, or an internal code on the registration of For Hire vehicles, such as Charter Limousines, Taxis and Buses. 

First issue 1926?
Last issue 1992

Generally identified by number-letter prefix 1926?-1965
marked P.S.C. 1966-1992
passenger colors assumed 1926-1965




1926

"SC" inside Palmetto Tree design
red/white
"PUBLIC SERVICE" bottom

1927
"SC" inside Palmetto Tree design
colors unknown
"PUBLIC SERVICE" bottom

1928

colors unknown


1929

colors unknown


1930

"IODINE" vertically on right side
assumed white/black (repainted plate shown)


1931
"THE IODINE STATE" bottom
colors unknown


1932
"THE IODINE STATE" bottom
colors unknown


1933
"THE IODINE PRODUCTS STATE" bottom
colors unknown


1934

"APRIL 30" or "OCTOBER 31" bottom
colors unknown


1935
1/2 year
"JUNE 30" or "DECEMBER 31" bottom
black/white known; other combinations possible


1936 1/2 year
"JUNE 30" or "DECEMBER 31"
colors unknown


1937 1/2 year
"JUNE 30" or "DECEMBER 31"
colors unknown


1938 1/2 year
"JUNE 30" or "DECEMBER 31"
colors unknown


1939 1/2 year
"JUNE 30" or "DECEMBER 31"
colors unknown


1940 1/2 year
"JUNE 30" or "DECEMBER 31"
colors unknown


1941 1/2 year
"JUNE 30" or "DECEMBER 31"
colors unknown


1942
"JUNE 30" or "DECEMBER 31" top
colors unknown


1943
1/2 year
restamped from collected plates - most from '42
"JUNE 30" or "DECEMBER 31" bottom
December - yellow/black

1944

restamped from collected plates (standard-size plate)
no month - red/white
December - black/white

1945

"JUNE 30" or "DECEMBER 31" top
June - yellow/black
December - colors unknown

1946
"JUNE 30" or "DECEMBER 31"
colors unknown


1947
"JUNE 30" or "DECEMBER 31"
colors unknown


1948
"JUNE 30" or "DECEMBER 31"
colors unknown


1949

"JUNE 30" or "DECEMBER 31"
June - colors unknown
December - silver/green

1950
"JUNE 30" or "DECEMBER 31"
colors unknown


1951

"JUNE 30" or "DECEMBER 31" top
June - colors unknown
December - yellow/black

1952
"JUNE 30" or "DECEMBER 31"
colors unknown


1953
"JUNE 30" or "DECEMBER 31"
colors unknown


1954

"JUNE 30" or "DECEMBER 31"
June - colors unknown
December - yellow/black

1955
"JUNE 30" or "DECEMBER 31"
colors unknown


1956
"JUNE 30" or "DECEMBER 31"
colors unknown


1957

"JUNE 30" or "DECEMBER 31"
June - black/yellow
December - yellow/black

1958

"JUNE 30" or "DECEMBER 31"
June - black/yellow
December - red/white

1959
"JUNE 30" or "DECEMBER 31"
colors unknown


1960
"JUNE 30" or "DECEMBER 31"
colors unknown


1961

"JUNE 30" or "DECEMBER 31"
June - black/yellow
December - colors unknown

1962

"JUNE 30" or "DECEMBER 31"
June - colors unknown
December - black/white

1963
"JUNE 30" or "DECEMBER 31"
colors unknown


1964

SC-"JUNE 30TH" or "DECEMBER 31ST" - 64
June - black/yellow
December - white/green

1965

SC-"JUNE 30TH" or "DEC. 31ST" - 65
June - red/yellow
December - white/black
1966

SC P.S.C. 6-30 or 12-31 66 bottom
June - white/red
December - colors unknown
1967
19 P.S.C 6-30 or 12-31 67 bottom
colors unknown


1968
19 P.S.C 6-30 or 12-31 68 bottom
colors unknown


1969

19 P.S.C 6-30 or 12-31 69 bottom
June - red/white
December - colors unknown
1970

19 P.S.C 6-30 or 12-31 70 bottom
June - colors unknown
December - black/white

1971

19 P.S.C 6-30 or 12-31 71 bottom
June - colors unknown
December - black/yellow

1972

19 P.S.C 6-30 or 12-31 72 bottom
June - white/green
December - black/yellow

1973

19 P.S.C 6-30 or 12-31 73 bottom
June - white/brown
December - colors unknown

1974

19 P.S.C 6-30 or 12-31 74 bottom
June - white/orange
December - blue/white

1975

19 P.S.C 6-30 or 12-31 75 bottom
June - white/blue
December - colors unknown
1976

19 P.S.C 6-30 or 12-31 76 bottom
June - white/green
December - colors unknown
1977

19 P.S.C 6-30 or 12-31 77 bottom
June - white/maroon
December - colors unknown
1978

19 P.S.C 6-30 or 12-31 78 bottom
June - green/yellow
December - blue/tan

1979

19 P.S.C 6-30 or 12-31 79 bottom
June - white/blue
December - colors unknown

1980

19 P.S.C 6-30 or 12-31 80 bottom
June - white/red
December - colors unknown
1981

19 P.S.C 6-30 or 12-31 81 bottom
June - green/yellow
December - blue/orange
1982

19 P.S.C 6-30 or 12-31 82 bottom
June - orange/blue
December - colors unknown
1983

19 P.S.C 6-30 or 12-31 83 bottom
June - yellow/red
December - colors unknown
1984

19 P.S.C 6-30 or 12-31 84 bottom
June - white/green
December - colors unknown
1985

19 P.S.C 6-30 or 12-31 85 bottom
June - white/red
December - yellow/green
1986

19 P.S.C 6-30 or 12-31 86 bottom
June - green/yellow
December - colors unknown

1987

19 P.S.C 6-30 or 12-31 87 bottom
June - white/light blue
December - colors unknown
1988

19 P.S.C 6-30 or 12-31 88 bottom
June - yellow/red
December - colors unknown
1989

19 P.S.C 6-30 or 12-31 89 bottom
June - white/green
December - colors unknown

1990

19 P.S.C 6-30 or 12-31 90 bottom
June - white/light blue
December - colors unknown
1991

19 P.S.C 6-30 or 12-31 91 bottom
June - white/red
December - colors unknown
1992

19 P.S.C 6-30 or 12-31 92 bottom
June - white/green
December - colors unknown

Prefixes:
1A
1C
1E
2E
25E
31E
41E
52E
61E
1F
2F
21F
22F
41F
61F
X1A
2ME
L1E
L2E
R1A
R1F

working theory: need confirmation

F for Farm Products
C for Commercial
X1A Car carriers
  (X=dealer on other plates)
ME for Mobile Equipment
  (wreckers/cranes/etc)
R for Replacement plates