Humorously enough, I am mildly colorblind and so had to get the expert eye of the renowned Joe T to help me get a real 1925, as I did not trust my eye alone.
Some of them, depending on the scan settings, I can tell pretty easily-- but only if side-by-side. Much harder for me to discern when viewed solo. Here is my 1925 for reference... Below it is (what my colorblind a$$ believes) is an example of the 1926 tint.
