Timegate question

i understand that this rare recording exists in versions with a black cover and a white cover. Can someone tell me what, if any, are the significant issues. The history on ebay seems to favor the white cover. Thanks, LS
Stumbled onto Salvatore's info. Three versions(2 with a blue, not black cover). He likes the first blue cover. Ebay likes the rarer white(promo) cover.
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