Ok then, I suspect that Phonogram passed their surplus pressings onto Bovema when the latter took over the MCA licence, though that sort of thing usually happens with complete packages (e.g. EMI UK selling surplus Motown albums - covers and records - on to RCA in late 1981). Mind you, MCA US had surplus records without covers, and surplus covers without records, when they took over ABC in 1979, as can be seen on many of the subsequent reissues that combined ABC pressings with MCA covers, or ABC covers with MCA pressings, so ABC's management of their manufacturing processes must have been really up the spout!
Didn't buy this. This came directly from the record company sales rep. These “miss matches” (foreign sleeves with Dutch records) happened quite a lot in the early seventies. Maybe they bought a stack of overstock sleeves to save on printing costs, or used these older sleeves for promotional copies when printed domestic sleeves weren't available yet. Who knows? The doings of record companies often remain a mystery. Agree the release date should be ammended.
Leonard, did you buy this new or used? The MCA issue at Discogs doesn't have a Uni cover, so I wonder whether this is one of those situations where a used record shop swapped out a damaged record or cover. Note that the original Uni issue came through Phonogram, and the MCA reissue through Bovema/EMI (and the latter would most probably have been in 1974, coinciding with MCA going to EMI in the UK).