no idea, I would suggest maybe contacting Lone wolf and ask them, I am sure they could tell you, and that would be my suggestion for you
I own a real one, came direct from them 6 yrs ago!
But I wish they had the wide seat climber when I got mine, the original is a tad tight when your in heavy cold weather clothes, and the seat, well its not that great, changed to a summit seat, huge difference on all day sits!
also, they recommend you replace the climbing straps every 5 yrs too, so if you don't know how old, think about that as you go on if its a deal on price if you have to buy new climbing straps ??
just food for thought