Is this an error

[junglistOn1]

Hello again all, I found this in a roll of state quarter sometime back and forgot I had it until recently. It looks like similar to the one on coinfacts about 1999 state quarters on experimental planchets it also has a die break on his neck. Please help with this one.

[diamond]

I don't see any die break. In fact, I can't see anything that would distinguish this coin from a normal Rhode Island quarter.

[junglistOn1]

I posted it because of the color. The color is similar to the 1999 state quarters on coinfacts.

[diamond]

And how is the color different from a normal quarter?

[junglistOn1]

hello these are new pics

[diamond]

It's a grayer shade, then. It could be struck on an improperly annealed planchet. A clad planchet that's exposed to too much heat in the annealing oven, or that spends too much time in the annealing oven, can turn gray or even black. There are other sources of discoloration, though.