The individual discs are encased in jewel case and have separate album titles Disc One: 20 Golden Oldies, Disc Two: 20 Golden Oldies Vol 3, Disc Three: 20 Golden Oldies Vol 4, Disc Four 20 Golden Oldies Vol 5 and Disc Five: 20 + Bonus Track Golden Oldies Vol. 6.
Also, the discs have different order numbers. The discs were probably released separately but certainly sold individually without the box cover which is a simple cardboard slipcase.
The title selection consists of original recordings and partly of re-recordings, the two titles of Melanie are Acoustic Live versions.
Matrix / Runout: 900.276 (Disc 1)
Matrix / Runout: 900.352 (Disc 2)
Matrix / Runout: 900.403 (Disc 3)
Matrix / Runout: 900.513 (Disc 4)
Matrix / Runout: 900.539 (Disc 5)