I have tried to do just that. This morning, I made my way to their European site (I think; the prices were stated I believe in Chinese RMNB) and expressed doubts about a seller selling sweaters with BC tags. Unfortunately, there was no way for me to attach pictures. We’ll see if I get a response.Why don't you just write an email to Cucinelli directly and ask them if this model actually existed or not? You will need to do this anyway because in order to get a refund from PayPal they ask for an expertise in writing confirming that it is fake. If you have the response from Cucinelli you get the needed expert opinion for free.
Loro Piana, Zegna, Massimo Alba, Maurizio Baldassari.....
Do you have a better way of contacting BC?