High Quality Content by WIKIPEDIA articles! In 2004, car maker Lincoln introduced two concept car models intended to fill the void left in the Lincoln line-up by the Mark Series which was discontinued in 1998. These models were the Mark X and MK9. Concerning the heritage of the Mark the Ford Motor Company press release states, "Throughout its history, Lincoln has used the Mark name to signal a truly special vehicle... the 1956 Continental Mark II... became a classic for its high quality... The 1969 Mark III was Lincoln`s most successful new model at the time, selling more than 30,000 units."