Hi Alex,
I'm afraid I don't know if it's series 1 or 2, but what I can tell you is that it has no resonance chamber built into it. The ends are in good condition, but, as you'd expect, it is covered in surface rust, as any exhaust like this will be, being secondhand. But it's in average condition, and should be a useful exhaust I'd say.
I look forward to hearing your reply.
regards,
Fraser