Prestige leased it from a label that is now part of the Universal umbrella is my guess.
This is one of the best of the 1964 European tour concerts, and it is in really good sound overall so this reissue should sound fantastic. . . . I love this tour for the performances of the entire group: Coles was great til he took ill, Dolphy and Jordan were individually and collectively great, Byard was really ON IT the whole time, Mingus was in charge and HAPPY, Danny was the backbone as always.