Just different homologation numbers. They're different construction so each has its own homologation. 01.007/8 is the reference number of that particular model of suit, CSAI means it was submitted through the Italian msa and 87 is the year of submission (note: not the year of manufacture. This standard only ceased legality in 2004 so it may have been made any time up until then. IIRC 8856-2000 only started being used in 2002/3).
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