How do I check if its not a chinese copy?

Hi I have the opportunity to buy a new LOOK 576 FRAME/FORK set from a friend of a friend for £800, I'm aware these are normally much more than this, how can I guarantee its not a chinese copy?
thanks
Ian
thanks
Ian
Winter/Training: Trek 1.9
TT: Planet X Stealth Pro with extra carbon bling!
MTB: Trek Fuel EX6 + GIANT XTC 29er
Race: LOOK 595
Fixie: Dolan
http://www.bmycharity.com/AberfeldyMidd ... eTriathlon
TT: Planet X Stealth Pro with extra carbon bling!
MTB: Trek Fuel EX6 + GIANT XTC 29er
Race: LOOK 595
Fixie: Dolan
http://www.bmycharity.com/AberfeldyMidd ... eTriathlon
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