Brian,
What you have is the BLUE CAP variant. And like I mentioned in my earlier post, the magenta is much stronger on this variant.
I don't own any of the examples that I posted above. I do have a PSA 4, but mine is the same variant as the SGC 6. I would like to own the BLUE CAP variant someday, but at the moment they are too damn expensive! I am hoping prices will come down in the future, but they might go the other way!
I'm going to take a wild guess here, but the BLUE CAP variant could have been a first printing. Afterwards, Leaf Gum Co. decided to make changes to the printing plates, colors, etc. I also think that certain variants should be priced higher than the others. For example, the BLUE CAP variant is harder to find, so it should be worth more. However, most collectors just care about one thing: the grade!
