I know that they share the body with the 49-51 Mercurys,but now I am confused.
Some got that "notch" in the door like the Mercs+flat front glas and others got no notch and curved one piece front glas.Hmm...gotta investigate that.
yes two type of Lincolns, Cosmo was top and had longer wheelbase! had chrome arch over front wheels on early ones. one interesting note is that used car sales used to "upgrade" cars to look newer so it is not impossible to have an old model with newer parts to seem like it was new vs older. one of the old tricks they used when selling used cars (that and sawdust in the crank case! )