What is this error called and is it worth much?

It's a delamination error.

That one is great as it's still attached.

My guess is that it's worth about $30-50.

Here's mine:

PM sent!

@UrbanDecay04 said:

@Zoins said:
It's a delamination error.

That one is great is it's still attached.

My guess is that it's worth about $30-50.

Here's mine:

That's the most extreme example I've ever seen! Nice!

It's pretty amazing. I love the "look inside" the coin. Have to get a TrueView for it one of these days!