TULSA, Okla. (AP) — R.E. Humbertson, wherever you are, you are the winner of "Miss Belvedere," the rusty 1957 Plymouth hauled from its leaky vault last week after being buried for a half century.

Humbertson, born July 1921, or his or her closest living relative, has five years to claim the two-door hardtop that drew international attention when it was unearthed, organizers announced Friday.

When the car was buried in 1957, hundreds of people submitted guesses on what Tulsa's population would be in 2007. Humbertson's guess of 384,743 was only slightly off the official U.S. Census count of 382,457.

There were more than 800 guesses, ranging from zero to 2 billion, written on a paper list and postcards inside a time capsule buried in the concrete vault, supposedly tough enough to withstand a nuclear attack.