Hi, this is my first ask, and wish to knowbis anyone trayed to refine this, and in actualy, contain this pins gold or it is bras .
For now, i can't test by myself , and local goldseller said that this piece don't have gold at all.
I would say gold plated brass. It might be good plating but the ratio between surface area and weight makes them quite low in gold per kg. Prime material for a gold reverse plating cell.