Well, all I can tell you is Paul i had it on one those old bootleg tapes (on which there was no track information) but all the other tracks were definitely Motown as a lot of them appeared, in decent sound quality, on "COM1". If memory serves me right the track was discussed in the old "YTF" fanzine years back.
Just to change the subject slightly, wasn' t there supposed to be a "COM5" in the works?
Ivor