RCA Victor Custom Record Division

RCA Custom Record Division was a mastering and pressing operation providing services to third-party record companies on a contract basis. For 45RPM pressings a date code in the matrix identifies when the record was mastered; it is the first letter and number of the eight digit matrix number up to 1954. In 1955, RCA changed its system slightly so that the first letter alone represented the year. E0 - 1950 E1 - 1951 E2 - 1952 E3 - 1953 E4 - 1954 F - 1955 G - 1956 H - 1957 J - 1958 K - 1959 L - 1960 M - 1961 N - 1962 P - 1963 R - 1964 S - 1965 T - 1966 U - 1967 W - 1968 X - 1969 Z - 1970 A - 1971 B - 1972 C - 1973 D - 1974 E - 1975