A friend of mine handed me this coin tonight and I decided to post it here for you guys to discuss. Aside from the obvious error, I noticed additional features about. I always got picked on by some members for seeing errors on coins when there weren't any, which comes with being a novice. I have actually all but stopped coin collecting and really never advanced any further. For that reason, I prefer not to list what I saw to save face because I am still a novice. I know that a lot of you guys know what to look for and can eliminate what others see as errors immediately. I look forward to seeing your comments.
The lack of the blakesy effect across from the missing chunk on the dime makes me think its more likely damage than an error. The strike also seems pretty sharp for a coin that had a piece missing when it was struck. I'm not an expert on errors by any means, but I always think its best to think horses instead of zebras when dealing with coins. Think common and work from there, it usually helps.
That is no mint error of any kind. It's DEFDAM - Definitely Damaged Somehow the clad on the Obverse broke off exposing the copper in between the planchet. The raised rim on the Reverse also looks dented a bit. Only person who caused the damage would know how it occurred. Just because you see something different, strange or weird doesn't automatically make it an error.
I was trying to decide whether it could've been a lamination that fell off after striking. It looks like damage, but the lack of corresponding damage on the reverse rules out some possible causes. @Jeff Callahan, I'm sorry that you've been made to feel unwelcome in the past. Errors are a tricky topic, and the Internet is overrun with clickbait videos ("You can RETIRE if you find this RARE ERROR in your POCKET CHANGE!!!"), so we get lots and lots of people coming in with damaged coins hoping they've struck it rich. Some of them get pretty testy when we try to explain that their "find" is worth no more than its face value. So some of us are harsher than we should be on newcomers, which can turn off ones who are honestly trying to learn.
Hi Jeff - as noted this looks likes damage. Glad you posted the reverse because as noted, the absence of the Blakesley Effect would indicate that the coin planchet was whole during the coining process. Hard to say what caused the damage or how it was produced, but almost certainly damage. The rim damage to the reverse adds to that conclusion. I hope you find your way back into the hobby. Don't be too discouraged by the sometimes harsher responses. It's as much your hobby as it is anyone else's.