I've just picked up the original 12" 33 1/3 rpm vinyl version of this on the Heliodor label for UK£2.00 from a charity shop. Obviously I cannot comment on how well this has been transferred to CD but the vinyl original is a gem.
I love Bach's keyboard concertos so I gambled the princely sum of £2 on this record. I was not that hopeful as on the record the performers are called the State Symphony Orchestra Berlin. Forgive my ignorance of lesser known German orchestras but this did not sound too promising. I am afraid I have never heard of the conductor or the soloist either.
The orchestration is lush and romantic in the style of the era (date of recording 1968) which may or may not be to your taste but it swings along with great rhythm in the allegro movements and great feeling in the adagio passages and the keyboard playing is spirited and it feels like there is a great connection between soloist and orchestra. It does not suffer from the ponderousness that some versions of Bach's music from that era are afflicted with The vinyl album has also been well engineered with a good sound mix and I rate it up there with my hitherto favourite account of this music Raymond Leppard conducting the English Chamber Orchestra with various soloists (on Philips CD).