O.A.D. Serie Azul

Sub-series of Organizacion Amigos Del Disco or O.A.D. for Odeon. Ran from 1964 to 1972.
#cat series is DMO 55XXX, previously Exitos Permanentes. Some reissues use their original Odeon or Exitos Permanentes #cat
After 1972 it haphazardly appeared from in unrelated issues as stock print / misprint.