Fortunately, most of my Lincoln Bicentennials are ones I pulled out of circulation in 2009 when they first appeared. I have about 30 or so squirreled away in 2x2s that are in new pristine BU condition. On the downside, I've still got two missing from the set - the Philly 'Professional Life' and the Denver 'Presidency'.
As for my post-wheats collection, it's complete except for those two bicens., the 2019-W, and both 2025s. And, of course, the 1970-S small date!
I will soon be starting on collecting the proof strikes of 1959 to date.
I already have a hand-full of early 60s dates.