Any BOSE system experts on here?

[Dansta]

Been given an old school system but don't think it matches up. Just wondering how they used to come out.

It looks like a Lifestyle 5 system... well the main unit does, but it has 5 twin speakers and the sub says acoustimass 25 series II on it... Isn't that supposed to be with a Lifestyle 25 system?

lol grrrr

any help appreciated...