I've now had a chance to listen to every disc (apart from the 45): all of them sound fine, but "Coltrane Legacy" sounds a bit rolled-off and "Giant Steps" slightly muddy (both still enjoyable, though). Heck, it might have just been the wrong temperature for my cart or something. Love the "Avant-Garde"!
The cover reproductions are well done. "Coltrane Legacy" comes in simple brown cover w/o liner, for some reason. The other LPs all have an extra sheet in with the cover and back cover -- no idea why but if you're the type of person who likes to display covers in those wall frames, hey presto, you can have your cake and it eat.
Back of covers says "Printed in the USA" (presumably historical), but the labels on the LPs themselves say "Made (or manufactured?) in Germany" -- judging from the quality probably Optimal or Pallas.