1871 Washington 1 Cent Curiosity

I'm a stamp novice seeking knowledge. I recently inherited a collection of 10,000+ stamps that hasn't seen the light of day in nearly 80 years. While carefully sorting through them, I've discovered some intriguing finds.
The most intriguing so far is an 1871 George Washington two-color 1 cent stamp. I've learned that it is printed on cotton paper infused with silk threads, a material that was being tested at the time.
What is most interesting is that the printing plates appear to have been misaligned. Washington's bust seems to be set lower in the octagonal window than it should be, resulting in an overprint of the lower part of his body over the orange frame surrounding the window. In the photo, the orange frame can be seen peeking through the black ink of his jacket.
I am curious to learn more about this stamp. Is this what might be considered an error? Or is it possible that the postal service printed all the stamps in this issue the same way?
Any insights that may lead to my enlightenment will be greatly appreciated. Thank you.



*** Moved by Staff to a more appropriate forum. ***

Not an error, but it is a freak. This happens quite a lot on stamps that require more than one press run.

Welcome to the forum, Peter

Thank you, Petert4522, for your greeting and your insight. Because of this stamp accumulation that has come unexpectedly into my possession, I have suddenly become immersed in the world of stamps. I must say, had I known how intriguing and fascinating the world of postage stamps is, I would have ventured into it long ago. I am absolutely enthralled.
Cheers! Thanks for taking the time to respond. All the best.

And believe it sometimes the bust is even inverted to the frame. QC issues with two pass printing.

Here's an example of that.