Corrected year. This is Die Walküre from the Böhm Bayreuth Ring (the cover art on this record points at Philips 446 057-2, the 14-CD cycle box). The cycle was taped across two Festivals: Rheingold 1966, Walküre 1967, Siegfried 1966, Götterdämmerung 1967 -- per Wagner Discography, http://www.wagnerdiscography.com/discography/rin/rin66bohm.htm . The Decca Eloquence 2013 remaster of the same cycle (480 7158), whose booklet is scanned in the rip being filed, prints "Live-Aufnahmen von den Bayreuther Festspielen 1967". findopera already had Götterdämmerung as 1967; Walküre was the odd one out at 1966.