Yet Another Ask The Experts - All Are Of These 210s?

I'd have said yeah, but one is a slightly different color and the right border lines so very crisp and clear and clean. In fact, all of the lines are a lot more crisp and clean. It's like it was recently printed with new plates compared to the other two. Looking at the upper right portion - that right line at the top somehow looks different.
Now before you complain "oh here we go again".......... I do have vision issues. Blind in right eye and less than perfect vision with left.
And - my reason for asking is I am sort of a perfectionist - I want all stamps to be properly identified so I put them in the correct spot in my books. That does several things - among them is correctness and neatness, but I also then know what I DO or do NOT have. If I mis-ID a stamp, I will either end up with two of the same or not getting one I need because the wrong stamp is in that spot!

As these stamps were printed in at least 10s of Millions, there are going to be color and print quality variations from multiple mixings of ink and fresh vs. worn plates. Your question is a valid one, as sometimes there may be color errors or printing plate flaws on stamps.

Your stamps appear to be all the Scott 210. Don't hesitate to ask questions and show pics of other ones you may have questions about!

I expected them to technically be the "same stamp"......... I did find some interesting paper variations last night and may submit pictures of that as one appears to have a screen type pattern (meaning a mesh pattern like the bug screen on a door, but finer) and want to get my wife's light box out and try to show that......... but beings some of these, perhaps even the 210, was printed even in the billions as some were, there were likely some variations in the paper as well.
I consider myself a learning amateur. Started in the 1960s as a kid, stopped when I got to college in the 1970s, then picked it back up again about 20 years ago, transferring everything I had from my childhood books to new, modern albums using mounts. It's relaxing in a hectic world.
But as my hands are unsteady and my eyes a lot older, some things just aren't as easy or obvious as they were 60 years ago!
I'm in it for the fun and relaxation. If I ask about potential value- I mean is it worth more than $5, for example, or for notes for the future - these will go to my grandson if he's interested.