I'm not much into pre-1800 coins, but my friend got this: I have no idea about the value, but i thinking gold weight only, as it was used to be a bracelet, and there are marks on the borders.
Well, from what one can read the coin appers to bear the NR mintmark, with assayer JJ. So it appears to be a doubloon from Nuevo Reino (NR), present day Colombia. You can check the weight, it should weigh approx. 27.07 grams, with a gold content of 0.784 oz. These doubloons regularly come with surface laminations, but still fairly smooth surfaces. This specimen appears quite grainy on the surface - so it has seen some severe mishandling at some stage, or possibly a salvaged coin? If the coin is real, the WCC says it is worth about $ 400. This is a value from 2004 before gold went up in value, so you need to adjust. Eduard
Based solely on the pics I would say that is a cast fake. Devices and legends are soft and mushy, looks to be plenty of casting bubbles and the surface is very rough. And no, salt water will not do that to gold.
No, it doesn't. Salt water does not corrode gold coins. And given the weight, I would say that confirms it is a fake. This coin for example was recovered from a shipwreck, the entire mintage was on the ship - look at the luster remaining on that coin.
I would scuba dive while wearing gold, because it came out nice and clean and the reverse on the OP coin isn't from salt water exposure nor is it damaged from sand. The first thing that crossed my mind was it was ugly and if a gold coin is ugly, it's usually a counterfeit (what I call ugly). Also, there appears to be a seam from 3K to 6K on the reverse. I don't think real ones have that seam. I totally agree with Doug on this one. Ribbit
You guys are right: salt water will not corrode a noble metal like gold. I have a Santiago mint 1750 'Pelucona' (8 escudos coin) salvaged from the Nuestra Senora de la Luz on the River Plate. The coin has some deposits on it, but the surfaces themselves are mainly smooth. This coin does look rather rough. Could it be because it was 'tumbled' at some stage? If i recall, this is an unscrupulous practice whereby gold coins would be tumbled with stones in order remove flakes from the surface. In spanish the practice (i think) is called 'sudado' or sweating.
That will cause the raised areas more damage than the lower surface areas, which is the exact opposite of this coin. The lower areas are damaged more than the raised areas. Plus, that nice crisp seam on the edge doesn't help it out. Ribbit
Thanks for the comments guys, as i told before, i don't have experience on this subject. But with your input I have to agree is a fake.
