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That looks to me like a keypunch card, in the early days of IBM they were used as a primitive by (today’s standards) way of commanding a computer
As a kid I saw stacks and stacks of those things, my dad was an IBM field service tech and my mom a keypunch operator (one of the women who actually punch the cards with a machine so it could then be used to command a computer)
Dad used to repair her machine which is how they met
She quit working when they married, and he retired from IBM after over 30 years with them
Search IBM keypunch card and see what you can find!
https://www.ibm.com/history/punched-card
Last edited by gemutlich; May 18, 2026 at 07:29 PM.
Reason: Edited to add IBM link
That looks to me like a keypunch card, in the early days of IBM they were used as a primitive by (today’s standards) way of commanding a computer
As a kid I saw stacks and stacks of those things, my dad was an IBM field service tech and my mom a keypunch operator (one of the women who actually punch the cards with a machine so it could then be used to command a computer)
Dad used to repair her machine which is how they met
She quit working when they married, and he retired from IBM after over 30 years with them
Search IBM keypunch card and see what you can find!
Ya after a quick google I found that it appeared to be IBM punch paper. Wondering what the text at the top means, seems to be a VIN or build info, can’t tell though.
There's a few different terms for it, some call it a buck sheet, build punch, can't member the others but someone will chime in with the correct-ish name, but it should match the VIN of your truck, sometimes they are under the seat in between the springs and fall apart when you touch them, yours is in very good condition, I found the one for my 66 in the seat springs, it pretty much disintegrated when I tried to get it out.
Keep it in a plastic sleeve, very cool to have, F10BU9400XX should be your VIN, it was used on the assembly line to specify the build/options.
I don't think it was from my truck, plate shows a different VIN which matches up better to the rest of the specs.
I doubt it was cab swapped as well - seems a bunch of stuff put together on this one over the years though, gives me an excuse to keep getting more aftermarket stuff I guess!
X2 looks like a assembly line "Built Sheet" and AFAIK there is no way to decifer them. Sort of like the "buck tag" that can be found under the hood or under the front of the bed. Has the vin, but other codes that to not decoded like a normal Warrenty Plate.
Plate....you mean Warrenty Plate on the dvrs side door edge?
And or the Safety Certificiation sticker on the dvrs side B pillar?
Have you checked those vin's to match the frame vin's? Still acool find if the vin matched YOUR truck.
Last edited by 77&79F250; May 18, 2026 at 11:27 PM.
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