Are Odd Coins Worth Anything?

Here is a link you can research your coins http://www.error-ref.com/ There is a lot of info but it might help sort out keepers from junk. Then again you could post them here. We enjoy helping newcomers learn about their coins.
Please make a new post for each type of "oddity". If you have more than one coin of certain type just post the best example. Try to include close up shots as well a photo of the full coin front and back.

OK, here are some odd ones I have:


The clips:



1922 with very, very faint mint mark



1950D with blob near "9"


Another blob near "9"



1950 with double die strike on reverse


Reverse of 1950

Definitely post a picture of the 22 reverse.

This is a tough one on the 22
Almost seems like a whole new die pair.
Was leaning towards die pair #1 but no rev. die crack can be seen, at least in the pic. You would assume a weak reverse
right off the bat but the rev. wear matches up pretty well
with the obv. wear. Might want to have one of the pro's take
a look at it in hand first. Then decide if worth a slab or not after that. I had one very similar and it was a #3
Anyway, a 200 to 300 dollar coin. Ruled out #4 anyway. Could be a new #5 :)
I used to be able to nail these down pretty quick but ?