The Marvin Gaye set is the only Motown set I have that has the 4 CDs in jewel cases with all 4 visible [[but the Phil Spector "Back To Mono" set is exactly the same).
The next nearest Motown sets are the box sets that have 4 CDs in individual jewel cases and 2 compartments that hold 2 each plus a booklet. Examples here are the two "Hitsvile USA" sets and the "Forever Diana" release [[see below).
Bookmarks