1957 Desoto Adventurer
images and text from http://blog.hemmings.com/index.php/2012/01/19/five-vehicles-from-ron-prattes-collection-set-to-cross-barrett-jacksons-scottsdale-auction-block/
one of only 153 1968 Shelby GT500 convertibles with thte 428 and 4 speed built in 1968
below are most of the cars Ron Pratte auctioned off this weekend, the ones that aren't already pictured above
the above two images from http://www.barrett-jackson.com/application/onlinesubmission/collections.aspx?cid=5
the video that shows Ron Prattes collection doesn't have an embed ability, so you'll have to go to Speed TV.com to see it: http://www.speedtv.com/video/barrett-jackson/scottsdale/bj-ron-pratte-collection-1395246246001/1#_vtop but here are some screen grabs from it
above images from that video linked above