Here is a 1958P Nickel that I believe has been an improperly annealed planchet. I have never seen one in person but have done some research online and not sure how to know if it is legitimate . Any information on the subject would be greatly appreciated
It is the correct year for a BB designation. 58'-59' is the years that some grading comanies reconize as a BB. I believe there was a lot made of these made in these two years is why they got a desination. It is just an Improperly Annealed Planchet error. The BB desination gets thrown at any black nickel from what I see, which is not correct and why there is much confusion about the name.
