Did you know that the styling exercise for what became the 1961 Lincoln Continental was originally going to be the 1961 Ford Thunderbird? It's true.
This has the Lincoln emblems on it, indicating this photo was taken after that decision had been made, and shows a planned 2-door hardtop which never made it to production, and which didn't exist in the Lincoln line from 1961-1965. Also planned was a 4-door hardtop, of which a handful were made early in production, all of which included the automatic retracting rear door glass, like the production Convertible models had.
Source: Vintage Automobile Dealerships and Automobilia