Modest Discovery in my collection (T206 back)

[TobaccoKing4]

I figured some of you'd enjoy reading about this little find I had while looking through my T206's. I was checking out my T206's when I decided to check the backs, which I have recently been getting more interested in. I was suprised when I saw that I had a Sweet Caporal 350-460 Factory 42 (no overprint)! I checked the list here, and it is the second rarest T206 back I have. So I flipped it over and it was my T206 Hugh Duffy which was one of the first cards I bought for $60 at my first card show I ever attended when I was about 11-12 (20 now). The card would be between a 2-3 PSA if I were to get it graded.

I thought it was cool how things almost came full circle in a way. That was my first HOF purchase for a T206 and I considered it my best card for a long time since he hit .440 in 1894. Since then I got used to it and didn't think of it much but now I'm back to loving it

I also found what I believe to be 3 apple green Sovereign backs

I'm not sure though because I only have 3 Sovereign backs so that would mean all of them were of the rarer variation. I saw the list we have here of the rarity of backs. But how rare are these backs and how much more valuable does that make the cards?