Why there's no purity engraved on the perth mint vintage gold bar?

[erdongdatian]

Recently I bought a perth mint vintage gold bar from my friend. I notice that there is no purity engraved on it. Only the weight(1/2 oz) and the lettering "Fine""The Perth Mint" can be seen on it. Is it fake? Why does it not have the purity number such as 9999 on it?

 

[spannermonkey]

A picture says 1000 words
Tried google ?

 

[goldpelican]

That's likely an old 996 purity bar if it's unmarked.

 

[ddevil]

The old PM 1oz bars that are just marked with 'fine' are not 9999. They are mostly 996, sometimes a bit more, sometimes a bit less

 

[Skyrocket]

No purity engraved means it's worth more then if it was engraved = old.