I few years ago I read about this topic - a very old date seed (2000 yo) was discovered at an Israeli archeological site. It was planted and it sprouted. They were hoping for a female seed, but it was male - a healthy tree grew, and they used it to pollinate female trees.

https://www.smithsonianmag.com/smart...ced-180954746/

https://www.theatlantic.com/science/...-seeds/606079/