Chris,
Yes, my collection is from coins that are all found. I took a quick peek to double check. I was a little off, I am missing the 1909 VDB (P), not the 1909-S, the 1922 plain, and not sure what happened to my 1924-D, but it isn't there either. It appears I am missing it.
A few years ago, I started a project of swapping in better examples where I had them. It appears I didn't finish as my 40's and 50's are a mess. (I don't remember halting the project 1/2 way) . I will have to find a cold winters day when nothing else is going on and get my book put back together in proper fashion.
And I should also put an asterisk on my earlier statement lest anybody out there stand up and yell BS, I am not including the 3 steel pennies from 1943. (I have some, but they weren't found) I have found what I was sure were steel pennies, in with a pocket spill of other pennies from the same era, but there was nothing identifiable about them other than diameter.
I've been detecting for a while and have been persistent and fortunate enough to have found a lot of wheaties. My area also seems to have plenty of coins from both the San Francisco and Denver mint. We are roughly midway between the two. Most of the more desirable wheaties are from one or the other mints; i.e. 1914-D, 1909-S, 1909-S VDB and 1931-S.
But you never know when a keeper is going to turn up when you are out there swinging the coil.
I still have a friend that gives me crap over nicking Lincoln's beard on a 1931-S while we were hunting an old yard. I have been lucky enough to have found a few others since, but that is one I won't be living down anytime soon.
best of luck.
Rich (Utah)