This is one of a series of Black Label Dolby B encoded recordings, really excellent and much improved from some London / Ampex duplications that seemed to have been done on decks that needed recalibrating.
I think part of the improvement was the better tape stock that was available at the end of the tape era - this looks and sounds like Scotch 203, but we know Ampex wouldn't use that. The tape stock is not back-treated and will not go sticky. It does seem to have a tendency to behave as if it were staticy, but doesn't shed at all.
This is Beethoven's Symphonies 1 & 8, performed by the Suddeutsche Orchestra.
It is on Ampex AMP D 6037 recorded in 4 track Stereo, Dolby encoded at 7 1/2 ips.