3001old without cross support, with the mold pip on the stud, and the mold number above and/or below the tubes.
After the many responses I got to my overview of the bricks with the numbers inside the tubes, I have added most of the other bricks. I have not made an overview of the bricks with split tubes (they are not confusing, so they do not need one) or the bricks with a number inside the stud holes/antistiud only (those are way to confusing to attempt that for now).
This time I have also included color information. 🙂
[Original post and comments on Flickr.]