Harrington 1oz gold 9963 pure

I would have thought 9999 would be normal.

Is it normal that they had different purity back when they were making them?

 

You mean you have a bar that actually says.99.63%? That's pretty cool. Only a guess but it might be an assay bar where they've refined a product and then run a highly accurate assay/test series on it to find out exactly what's in it.

 

Any chance that is the serial number?

 

I'm pretty sue that's the purity. Nice bar by the way

 

It's the purity. Harrington individually assayed batches of 1oz bars. The weight will be slightly over 1 Troy oz, ensuring you get 1oz of 9999 equivalent.

 

Yes that is correct. It is slightly over.

How rare are non 9999 bars?

 

I have a few of them and none of them are 999 so I'm guessing not rare

 

Thanks

 

So you have any 9963?

 

Mine are 9978 9965 9978

 

we used have a thread discusses different gold bars & ingots with various brands. anyone can find it please?

 

http://forums.silverstackers.com/topic-12608-rare-collectable-and-vintage-gold-bars.html

 

Cost of achieving 9999 is way higher than 99XX.
I doubt those gold bullion coins are real 9999.
Anyone in a university metallurgy lab would do a simple test? Homogenize a 1/20 oz gold coin, say kangaroo, and put it in XRF or MS, to have the metal profile.
If it is under 9999 we could claim some damage from the mint.

 

That is pretty cool, makes sense that they would weigh it a bit more than an oz. to get 9999 value.