All Platinum morphed into Sugar Hill Records in 1979, so on all the white bluring to blue labels Sugar Hill Records Ltd. is credited at the bottom of the labels. There also exist a later black label version of most, if not all releases, that missed this credit, likely cause the Chess rights were bought by MCA Records in 1985 when Sugar Hill went down.
Vogue P.I.P. is credited on the rear cover for Distribution, while on the label perimeter commonly Disque Vogue P.I.P. is denoted for this task.
Near the cat# at the rear cover and on the labels either the code VG 306 or VG 405 appears.
Right society is commonly SACEM, but also NCB versions are known.
Please avoid to use the common P & C marks as a release date here. The belongs to earlier releases throughout at this series.