As I Get It, The Key Is On Nape´s Shadow 2 C 211B

Hi!
According to my observation, the key is on Shady nape. All samples of 210 has a heavily shadow in nape, but in the one on middle of photos below, shadow is lightly. But now i´ve been lightened & know this is not 211b. Thanks Kevin, but finally an answer, thanks.
Hope to read some comments.

ok...so the middle is a 211B???

mestal,

Where did you hear that "shadow in nape" can be used to identify 211B?

mestal....#211B is a SPECIAL PRINTING.
I special printing has a PROOF like impression.
Absolutely crisp and perfect.
Also...only about 1000 of these were issued and none
are used.
Again...sorry to be the bearer of the bad news.

It´s not bad news, is solid answering that I really appreciate. According to my SC, some of this issues were use in current postage, so that´s the root of my question. Straight and bare, I like that kind of answers. I understand clearly what you have said, but I don´t pretend to depend 100% on your answers, I like to do my own research so they both, research and your answers makes of me a better philatelic, I don´t know if that´s bad but I will keep on. And according to my own experience, experts some times are wrong, so there it is when I don´t sleep at the switch. Thanks again Kevin and I hope keep answering from you, thanks a lot.

And by the way, I wonder why I did not get a solid answer like this one before. I don´t care about the angry capitals, as I did not understand this answer before, it is just before, nobdy gaves the right answer.

Mestal, with all due respect, if nobody gives the right answers, then I don't understand why you ask the questions. Anytime you ask a question, you must be prepared to get some responses that don't correspond with what you thought the answer would be.

I really don't think that kevin 504 used capital letters in anger, but instead to emphasize a point.

Please keep on joining in the discussions, but try not to take offense when none is intended.

That is correct.

Thanks everybody, specially Kevin, because I like straight answers, and I will keep working on this site, I love it! A lot of stamps to post yet!