Plain Punch Cards.
The regular cards are simply numbered 0 through 9 down every column.
These cards are unused and un-punched.
Fancy Punch Cards.
Designed for large corporations, these cards were used for tracking personnel, tallying benefits, and property accounting.
These dual-purpose cards were usually filled in by hand and then punched by the data processing department.
Each kind of card could be identified at a glance by its bold color stripe.
Color and layout may vary.
These cards are unused and un-punched.
Scientific Punch Cards.
This Just In: Thanks to a generous client, we now have a few pre-punched cards containing Fortran statements and mathematical formulas.