I'm putting this here, since the item is part of the Potter era.
The Philosopher's Stone was moved to Hogwarts in Harry's first year, suggesting that Nicholas Flamel knew that it needed protection before Harry and Dumbledore were certain that Voldemort had resurfaced.
But Flamel was 600 + years old and the stone had been perfectly safe in his hands for that length of time.
Was the Philosopher's Stone Voldemort's intention throughout the First Wizarding War?
I think so. Because Adalbert Waffling, a magical theoretician who revolutionized the Wizarding World, died in 1981, not too long before Voldemort's defeat at Godric's Hollow. However, J K Rowling has said that the average age of Wizards dying of old age was 100. Waffling, however, died at 80. It's curious.
If Waffling was hired by Flamel to help come with ways to protect the stone, then he would have been one of the few Wizards to know how to get through the enchantments that protected it - meaning Voldemort could get his hands on it, if he tortured the information out of him and then killed him.
But Voldemort died before he could get his hands on the stone and re-continued his aims to get it when he resurfaced in 1991.
Does it sound like I'm pulling at threads? Or do you think it sounds plausible?