What's the oldest kit in your stash?

Mine is a 1959 "Death Valley Days" 20 Mule Team wagon from the old TV series "Wagon Train", still in the original shipping box from Borateem, makers of Borax.

My oldest WIP is the Revell 1/32 F4U-1 Corsair. Originally tooled in 1966, this is the 1978 "Baa Baa Black Sheep" boxing that my dad gave me for Yule that year. I was gifted a box of spare parts and a buttload of aftermarket PE & resin. Some day, I may finish it.