Are these error coins???

I went through 29 rolls of dimes and both of these were in them. Both have seen their fair share of circulation. The 1st one is a 1997D dime and it looks like the planchet may have been clipped. I scanned the reverse since it shows the smoothness around where the clipping is better. It doesn't seem to have been grinded by someone as I don't see any scratches and there is smoothness on the other side as well. The second dime is a 2000P and doesn't have a rim on the right side obverse at all.

Thanks for the help.
Scan:

 

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That's pretty odd that the 97D circulated for 8 years without being noticed then. I guess most people don't check their change one bit. Since it is circulated is it worth anything over face and is the 00P even worth keeping??? Thanks for the help GDJMSP.

 

I'm guessing the 2000 p isn't worth keeping, as it is only slightly off center, and I see ones similar to that nearly every day. Might want to wait for someone who knows more though.

 

Hi,
Technically, the first ten-cent coin was struck on an incomplete planchet. It is indeed real. The second "dime" was struck by a slightly mis-aligned obverse die. Of course, if the reverse is slightly askew, then it is a slight off-center strike.
Have Fun,
Bill

 

That's pretty cool. Never found an error dime before. I guess I'll keep the 2000P until I find something better. Is the 97D overall uncommon or worth more than 10 cents even in the circulated condition that it is in? Thanks for the help BTW.

 

Hi,
About $2.00 give or take
Have Fun,
Bill

 

And to think I was going to reroll it as I initially thought it was intentionally done by someone...

 

Hi,
One way to know if the coin is indeed one struck on an incomplete planchet is to look for what is known as the "Blakesley" effect. Go To: http://www.triton.vg/clip.html for the general idea. The explanation is not too bad on this page. Your coin shows this effect. Also, the lettering on the area near the "clip" will look, as it does on your coin, as though the lettering flows off the coin. That is different than a forgery of this error type where it is common for the lettering to look as though it just suddenly stops at the point that is "clipped".
Have Fun,
Bill

 

Thanks for the link. It's amazing to see that such a big coin like the one on that page circulated so much before being noticed. You'd think it would have been noticed right away after it was shipped off from the mint.