Due Diligence, a thought
One of the first checks of a possible seller is to find out if he really real.
In many countries I have representatives that I trust. So they are getting involved would I find an offer worthwhile to investigate further. There could very well be clauses in an FCO that I realize that it would take ages to negotiate them so it will work safe and secure.
There are cases when the seller gives you names of previous buyers. You get their contact details. The first thought that should strike you. Could there be something else going on. It is like another of the logical tests where you know from the beginning that there are one or two persons lying and you do not know who.
In this case you do not even know if anyone is or would be lying.
I have a perception that most offers are fraudulent. Thus I would consider most persons being liars.
So you call the two buyers in Europe. They confirm that the seller is correct and always performing and delivering the gold.
My logic would tell me that as it is very difficult to find sellers with gold and performing that if the seller was of that rare species then would say that he is not a real seller. If you have a seller performing you will not have any problem to sell or refine the gold you are getting. Why should you want somebody else to money out of your own pockets. The only reason is that the pockets are empty. You need the money the seller would give you when he has scammed the buyer.
That would be mu second thought. What would you think?
