THE CONTEMPORARY BASICS
pressing plants

RCA Hollywood ‘Deep Groove’
(1954 to 1970)






RCA 26mm ring
(1970 to 1973)




Monarch 73mm ring
(1973 to 1975)






CBS Santa Maria 69mm ring
(1975 to 1981)






Mystery plant (RTI?)
31.75mm ring (late 70s?)


KM 28mm ring
(1979 new titles)




Wakefield rings
(1981 to 1984)





