I would've thought that first one would be worth more than face value. That's pretty interesting!
I'm just barely getting started in the search for errors as well, but sometimes I find myself wondering if it's worth it. I mean, how is someone to know that an find is more valuable? I can understand the errors that have already been found. I'm talking about errors that might be one-of-a-kind. For example, I just got a few rolls of quarters yesterday. Found one today that I wanna look at more closely, and will once I've done the initial looksee. Fount a 1999 Georgia and, on the reverse, there is what looks to be a deep gouge going from the upper-right tip of the W in Wisdom, to the lower-left tip of the S in Wisdom. Here's the interesting part - it goes UNDER the I! That's telling me it was most likely due to a gouge in the planchet before minting. Is slightly wider than the middle of the I it goes under, with the widest part being where it touches the S. Also, the outer edge of the gouge is straight, while the inner edge is not straight.
I can post it some time, but not until next month. Running a bit low on data allotment right now.
There are other things I'm finding as well - like what appear to be extra bits of metal where there shouldn't be any. These are raised areas on the coins and, if looked at in correct light, can be seen with the naked eye....barely! Have also found tons of coins that appear to have "missing" metal. Often I can link it to damage elsewhere on the coin. However, there are many such instances where a coin has no other signs of damage, and very little if any visible wear. On the "missing metal" coins, I have been tossing them back in the wrappers as there are just so darn many of them! ...Guess I'm gonna have to use a good portion of my allotment posting some of my questions with pics.