The '59 DeSoto Adventurer should be a Certified Milestone by the Milestone Car Society in addition to the '56, '57, and '58 Adventurer, since the '59 is also a limited production, high performance model with it's own high performance engine and styling trim and interior, and being only two models, a hardtop coupe and convertible. The '59 DeSoto Adventurer does have all the credentials to be a Certified Milestone as the Certified Milestone '56, 57, and '58 Adventurers. All the Letter Series Chrysler 300s are Certified Milestones, from the first C-300 of 1955, and the Last Letter Series 300, the 300L of 1965. I have already posted this mention on the DeSoto Club Message Board. Keith Scott Bend, Oregon scottkey@msn.com