Messiah 2 Help

[SIXMILLION]

i got a messiah 2 from a friend,only problem is he doesnt know what version it is and the sticker on bottom of chio has come off so i cant work out version either for the sake of getting proper diagrams for v9 ps2.
any other way of identifying what version the messiah 2 is???
any help greatly appreciated

[PS2Daddy]

IF it doesnt have a sticker on it it is probably too old to work on a version 9 unless it was peeled off the messiah has to be at least a 1.33 to work on a version 9