Stolen gold bar from Fisher museum

Possibly, but those spanish bars weren't pure. They were more along the lines of a gold jewelry and as such could be broken, but would also be much, much harder to bend.

Probably so. But I think some of them were 20 - 22 karat.
 

Bars and discs always had stamps indicating purity...
As well as an array of other information.

fullsize_1.jpg
 

On that bar... the "XX..." is the purity mark.

and yes including the "..." heh
 

I personally have not heard of... or have seen... anything with a purity under 20k... and more often closer to and above 22k.
 

Oh... and for those who are curious... that bar stamp states that the purity is 20.75 karat... .25 % below 21k.
 

On that bar... the "XX..." is the purity mark.

and yes including the "..." heh

So XX = 20karat and each dot = 0.25karat? How did they measure the purity? Volume measured in a liquid and the weight? So each batch of bars from the foundry might have varying purity I suppose...
 

So XX = 20karat and each dot = 0.25karat? How did they measure the purity? Volume measured in a liquid and the weight? So each batch of bars from the foundry might have varying purity I suppose...

They used Archimedes Principal to determine purity. Weight vs volume.
 

/Users/Admin/Desktop/Prosecutors: Part of stolen 17th century gold bar recovered.webarchive
 

It's long gone now, melted down no doubt. It would be a miracle if it wasn't. That bar was truly priceless even after being appraised at half a million.
 

The article said they recovered a portion of the bar.
 

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