I'm wondering if anyone can help with this coin I found in my change. It's a 1952 - 2002 P quarter, which in my best guess, has had the nickel plating either come off, or it was never applied in the first place.
It has the look of a worn penny, with the brownish â€" copper colour. Based on wear, it appears to be softer than a normal quarter. It also appears to be slightly thinner than a normal quarter. It's definitely magnetic (a fridge magnet picks it up). I'm unsure about the weight as I'm unable to find my scale.
Can anyone help with this? I've attached a couple of pictures.

