wagudc
·I'm also a newbie here. So maybe my opinion doesn't count for much.
I'd think that no good seller would be upset about a thread asking for opinions on the authenticity of a watch they are selling.
In your shoes I'd send the seller a quick polite PM, "I'm not sure about xyz, I'm going to open a thread asking for opinions, I hope you don't mind."
Provided no one talks about pricing, I don't see an issue.
If a seller does get upset, you have to ask why.
Certainly give the seller an opportunity to respond before starting a thread. You may save yourself some embarrassment.
I once inquired about the originality of a dial, and the seller provided me with ample proof it was legit. I felt embarrassed even asking via PM. Starting a thread for it would have put my newbie ignorance on display, and would have made me look like an ass for questioning a respected member in such a way.