Looking at discogs, it seems to be a reissue of a 1982 Tadd Dameron tribute Mad About Tadd by a group called Continuum (including Kenny Barron). I've considered buying the 2003 CD release of that name, but never did.
Claims to have been recorded at Van Gelder Studio and mixed at Fantasy Studios. Allmusic says it was released on an obscure independent label.
The original LP releases were on the Quicksilver and Palo Alto labels, both based in California, but I know nothing of those labels.
Mystery to me. Might be an interesting story behind it (Van Gelder Studio?). I think it's probably legit, but am not certain.