My Quarter Is Peeling

What sort of value would something like this have? I see many "missing clad layer" coins on ebay that have sold for $100+, as well as a non-state quarter that looks similar to mine but with the "flap" folded all the way back (which to me sounds like something that might drop the value) for $75 that has yet to sell, but since mine's a State Quarter I don't know what the difference in value might come out to.

Haha, of course not. I figured having it attached adds a little bit more scarcity to it. I'm mad at myself, though, for bending out outwards a little bit when I got it (to see under it) because I didn't figure it was worth anything and was just something to keep in my oddity pile. Before the flap was bent slightly, it looked almost exactly like a regular quarter, there was almost no space under the flap (raised just enough that the gap was very barely visible).

Yeah, I'd be VERY happy to get $100+ for it, if I decide to sell it. I'm still not sure I want to, because it's a really neat thing to have in my collection.

I saw that listing on ebay, I wasn't sure if their asking price was reasonable or not - also I have no idea how long it's been listed at that price, and I wasn't sure how much more mine would bring in in comparison (being a State Quarter with only minor bending of the loose cladding, instead of what is on that auction).

The term for this error is "clamshell separation". It is not a "lamination error" or a "clamshell split". Both of the latter are effectively restricted to solid-alloy coins.

Mike is the expert. He is very technical in the correct terms he uses. So don't doubt him.

Oh no I wasn't trying to doubt anyone in particular, I just had a few terms thrown at me in this thread (and elsewhere) for this thing, so it's good to know the actual term. Thanks for the article too.

I think I'll probably keep it in my collection since I guess they seem to be relatively hard to find/uncommon (and also since I guess it probably isn't worth anything major - though up until this point I thought it was just a worthless oddity that I thought was pretty neat).

Haha, nope - like I said, just came out of my register at work, I traded a regular quarter I had in my pocket for it, and then it sat on my desk for a year or two before I made this post because I wanted to figure out what it was.

I've gotten a lot of information here but I'm having a ridiculously hard time finding ANY information on prior sales/values of coins like this - I don't know if that means it's THAT rare of a find, or if it's just something that's not very noteworthy, or what. Googling "clamshell separation" leads me only to maybe four or five other forum posts about kind of similar coins (though they have different split locations), as well as a few posts by Mike Diamond.

I see.. well that helps confirm it's worth more to me in my coin box than it is in my wallet! Thanks a bunch.