Looks like very slight Strike Doubling. (Proof coins are struck more than once)
AKA: Machine Doubling. (I prefer to call the term Strike Doubling proof coins as this is what usually caused the problem. But the term is my choice for these)
The die is not hub doubled, just a very slight miss alignment on the second strike. On proof coins you will also see flat field doubling, but your coin is not an example of this.
AKA: Machine Doubling. (I prefer to call the term Strike Doubling proof coins as this is what usually caused the problem. But the term is my choice for these)
The die is not hub doubled, just a very slight miss alignment on the second strike. On proof coins you will also see flat field doubling, but your coin is not an example of this.






























