Thanks Errers and Varietys and ijn1944 for your insights.
I'm using this trip through my extra stash of Lincoln cents to see if I can find anything different from my first trip through to sort things by date and MM and look for obvious outliers.
There are lots of different features to look for and my knowledge of the series and it's quirks needs alot of work. I find many of the features to look for are quite subtle, at least for me, and I'm going to just have to keep looking and asking until I get a little better. The obvious stuff is seldom what you encounter.
I'm not so much trying to learn so that I can be a better buyer as I am to be more knowledgeable about what I already have. I sure appreciate being able to dip into the wealth of expertise here on my journey.