How about the Beech Bonanza…first produced in 1947…while production slowed in the 80s, I don’t think it ever officially stopped.

Lots of household items have been produced forever…Kelloggs Corn Flakes and Rice Crispies, Nabisco saltine crackers, Crackerjack caramel corn, Tootsie Roll candies, Heinz Ketchup and beans, Coke, pepsi, Dr. pepper, Kleenex, Bayer aspirin.

Worlds best chocolate turns 120 next year; http://www.fazer.fi/tuotteet-ja-asiakaspalvelu/tuotemerkit/fazerin-sininen/artikkelit/karl-fazer-1866—1932/