(Stereo) 'This version has a front cover that's mostly pink, instead of white coloring compared to M 660.
The Motown Sound
(Mono) 'U.S. Release with catalog number on front as 660, spine has MM 660 and label has MT-660'[discogs]
(Reissue) '(p) 1967
Made in the EU'[discogs]
(Album Stereo) Blue Motown labels.[philip]
(Stereo) 'MS-660 on label.'[discogs]
(Reissue) 'Audiophile 180g reissue.
Speakers Corner cat.# only on spine.'[discogs]
Released in the 'Back To Black' series. 60's style flipback sleeve. 180 gram vinyl.[sascha] 3 different catalogue numbers: M5-149 on cover, TML 11056 on back cover and 'Also Available in Stereo No. STML 11056', while the text at the bottom speaks of a STEREO recording.