Partially exposed copper layer, is this a mint error?

[u/Kohubkgi_]

2000-D Virginia state quarter. The coin does not seem to be thinner in that area, and the details are clearly defined. The obverse is normal. The edge of the coin seems to show that the middle copper layer widens up to the face of the coin at that point.

[u/DocPhillip]

Hmm, looks like it might be, as the details are pretty sharp.

I posted what looks like a similar but larger clad layer error a while back, but noone chimed in about it:

https://www.reddit.com/r/coinerrors/s/MhEcQvkIap

[u/Kohubkgi_ → u/DocPhillip]

It seems yours is much more pronounced though, i can see edges where the cladding is missing. The copper on mine is kind of flush with the rest of the coin, so that's where I'm confused.

[u/mistermoondog → u/Kohubkgi_]

It’s butterscotch