[Abravefan11]

As Jim and Craig stated some lists include the Cobb/Cobb, Nodgrass, and Murr'y.

My personal list is 524. I don't really understand why the Cobb/Cobb would be considered an additional card as no other card with multiple back brand ads has one separated from the rest. I also consider the Nodgrass and cards of the like print anomalies and not true variations to be listed separately like the Magie error.