found in change. Notice the heavy striations on the north of the reverse. They are most easily seen there, but in hand they are prominent throughout on both sides. Obv. is more heavily oxidized, but notice the oxidization. copper. The appearance of a weak strike on the obv. I think is due to that oxidization. I see no evidence of an acid bath or anything that could have been done TO it to remove the clad layer. Opinions?
The striations are more than likely due to the planchet being cut from a portion of the copper-nickel strip which had to be pulled through a feeder of some type. Lots of copper-nickel coins have these striations: As for the discoloration? Environmental damage IMO. perhaps this sat in a chlorinated pond but for sure the side that is NOT corroded was on the bottom with the corroded side toward the sun. Finding quarters in this condition is not uncommon but when they hit the Feds, they are pulled and destroyed. A missing clad layer coin would turn brown (like a cent) since the core is 100% copper. Additionally, the coin would be lighter than a normal quarter. Might I suggest to anybody with ANY interest in error coins that they pick up an inexpensive coin scale. They can be had for less than $25 and reveal a lot about what you think you might be seeing.