jan 1, 1984 - The first official NBA ball licensed by the nba. It includes evrything standard in an american ball today, the logo, the sizes, and in nba balls the commisioner signature.
Description:
https://www.hoopsbasket.com/blogs/hoops-basketball/the-evolution-of-the-nba-basketball-ballAdded to timeline:
Date:
jan 1, 1984
Now
~ 41 years ago