Here's what I see: The numbers on the upper left corner are your tractor serial number with transmission code, and then your engine serial number. Basically, ignore the A-Z grid that is below these numbers and look only at the punch holes. Go below the 6 on your serial number, and you'll notice that the punch hole lines up with the row of 6s that run horizontally across the rest of the card. Same thing goes for the 7, 1,0, 5 and so on with even the hyphen getting a punch up high where the specification row is. 

Every number on there will have a corresponding punch hole, as this is how an IBM card reader works. You feed the card through, and electrical contacts connect only where there are holes on the card. This tells the machine all of the codes on the card. The numbers are printed so that our human eyes can read it, but the machine doesn't need anything but the holes. The plan is for all of the build cards to eventually be fed through an IBM card reader, and then all of this stuff would be in a computer database where it could be pulled out and added up in an instant. There is a problem with that though. While the early build cards had the serial number on the front and punched in, later tractors (50 series and up) didn't have this feature because their cards had 3 digit codes and didn't have room for the serial number. All build cards have the tractor serial number, engine serial number, assembly date, delivery date and location written by hand on the back side, along with some other codes that I'm not sure about. The card reader machine won't be able to read these, so all of the information on the back side is going to have to be entered by hand. Since there are about 250,000 build cards, you can see the dilemma, especially on the later ones where the IBM machine won't be able to keep the tractor serial number with the punch codes.