I found this in my roll of quarters and it looks to have lost both clad layers but i am not sure can you take a look and see what you think. and it weighs 5.3 grams in case you were wondering,,,
You said that it lost both clad layers but you didn't post one of the obverse. If you weighed the coin and looked up what it is supposed to weigh. I would say that it is within tolerance.
@Svickers Yes to Environmental Damage. The clad layer was affected by exposure to soil, dirt, sand and the elements. I metal detect and have found hundreds of examples such as yours -
What @beef1020 and @paddyman98 said. It's environmental damage. The coin spent some time out in the elements, and was likely on or in the ground for some time. Like @paddyman98, I've dug hundreds of clad quarters with this appearance while out metal detecting. The pre-1965 silver ones come out of the dirt nice and bright, but the later copper-nickel clads like this turn grubby brown, reddish-brown, or grey-brown, depending on what kind of soil they were buried in.
I think that I brought about 200 bucks to the coin star once needing money. They are normal to see in circulation.
Although you've already answered my question I do apologize for the pics. I dont know how I didn't pic the obverse to go with the reverse. Newbie mistake.
Environmental damage, I dug a couple that looked just like that at the park last weekend. Clad doesn't like being in the ground, doesn't take long for them to look like that.