Opera on DVD, Blu-ray and CD
Of the several reeditions of the live recording in Bayreuth of Böhm's ring, I have serious doubts about the recordings they use:
B000025ESY (2006): Booklet says live 1967 (The Black Box)
B00159679S (2008): Booklet says live 1966 and 1967 (Bayreuth Decca Box set)
B003Y3MYYU (2010): Back cover...