2003 P State Quarter Clad Error?

Looks as if someone plated your quarter in cooper. No clad layer on the edges, it's all cooper. You can tell it's plated (opposed to solid cooper) by seeing the silver showing through on the rims. Why? Probably a high school science experiment. A neat curiosity, but numismatically, no premium I'm afraid.

to the CCF!

to the CCF!

It does look plated. A coin with both clad layers missing is almost impossibly rare, but a few are known to exist. Missing clad is usually on one side or the other and reduces the weight of the coin. A quarter with a missing clad layer should weigh about 4.67 grams or about 1 gram less than the normal 5.67 grams of a normal quarter.

A solid copper quarter from improperly prepared coin stock is possible, but again it would be incredibly rare.

Looks like on the rim, the copper (Not cooper) on the 'E' on the EPU peeled off there. So it might be a coating on the coin.

A clad quarter weights 5.670. if it's missing one of the "nickel" sides it loses about a gram of weight, if it's missing both sides it loses about 2 grams.

you can see nickel and copper on the close ups of the reeded edge between the reedings, in the valleys. Someone, for some reason, bronzed this quarter possibly though electroplating, I think the spots on the reverse rim and the obverse above the T in states is where he makes the wire contact to complete the circuit. the little vallies were likely blocked by small trapped air bubbles form the solution. suggesting a novice plater, messing around and learning. he also goes a little light on it. looks like he touched the reverse twice with the wires and the obverse once.

Maybe used a bronze Wheat cent as the anode, and the quarter as the cathode..... hard to say, looks like a do it yourself job though, not a sample piece from a plating business.