Fun with Numbers in my Lincoln Registry Set

I was reworking my “statistics bar” in my Circulation Strike Wheatbacked Lincoln Registry Set, with the new wider page width of the recently reformatted Registry, I had room to add a “Grade Metrics” area to my stat bar. I was curious with my Wheatie Set, both the distribution of grades and my average grade.
Looking at the numbers under the "Grade Metrics" column, there is amazing symmetry around the MS64/MS65 area … split 50/50 … and 102 of the 140 coins in my set are one of those 2 grades.
I’ve managed only 7 MS67’s and I’ve cheated a bit as 3 of those are steel and I think 1 or 2 of those remaining MS67's are RDs.
I have managed 17 MS66’s (but a number are MS66RB, which are a bit more common).
I have nabbed only 10 of the prized PCGS MS66BN’s out of the roughly 200 known to exist.
For the lowballers … only 3 MS62’s remain in my set … and 11 MS63’s (but some of those are beautiful and will be hard to replace).
My Average (Mean) Grade turned out to be MS 64.6 (Lets call it MS64+)
Interesting how it’s possible to accumulate eye appeal with an avg grade of MS64 if you are careful.
Here are the currently PCGS Populations of Wheaties in the 3 color classes. I focus on the BN's and RB's.
This is my set ... Coin images are resized PCGS TrueView Photos shot by Phil Arnold. The Coinboards I designed myself in Photoshop.
Fun Stuff!
Comments
6 67BN's? Where have I been? I thought it was 3 or 4.
Check out my iPhone app SlabReader!
A new 1936 and 1936-D was recently graded MS67BN,
There are no photos of them in CoinFacts (darn). Phil should have shot those as they are so rare.
The 6 are (in order of being slabbed from oldest to most recent):
1956-D
1957-D
1916-D
1909-S VDB
1936
1936-D
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My Toned Lincoln Registry Set