Are my zhanchi/guhongs original plastic??

Joined
Oct 13, 2014
Messages
3
Location
El Sereno, California
Hello there, so I need some help indicating if my puzzles are OP. I recently bought some Lubix puzzles from a guy online and was wondering if they're OP. They're a Lubix Zhanchi, Lubix Guhong and a Lubix Fusion (which is a more modified Guhong). I know that there are some indications that a Dayan Guhong/Zhanchi can be OP. The 1st is having a tannish core. Another indication are black screws. This to me is where it get confusing. SOme ppl say that for it to be OP, they need to have both a tannish core and black screws. In my case, all three have tannish cores but the lubix guhong has black screws as well. What do you guys think? They need to have both tannish cores AND black screws or are the tannish cores enough??
 
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