ibm card ? found under back seat

[L78 M21 410]

hello, i am new to this, i have never asked a question on the site before , i was wondering if anyone could tell me more about this ibm card i found under the back seat of a 69 chevelle, it is maybe like a build sheet ? :it says seq trim, body no, insp seq no,options ,style trim it has a lot of punch outs, and a list of numbers at the bottom 1 - 80 any help would be greatly appreciated thank you.

[mockingbird812]

Hi Brasco and welcome to sYc. Does your card look like this?



This was also found in my back seat. Can you post a picture of your card? We've got some smart guys here to decipher it or if you like the guys over at Team Chevelle can help you out. Basically, this card is a description of your interior make up. The body no. will match your trim tag on your cowl (except on the trim tag there will be an additional number at the beginning). Style no. and Trim no. found on this IBM punch card should also match your trim tag. Also, on my punch card are a couple of interior codes. A52 is a front bench seat, and B55 is a deluxe front seat cushion.

[L78 M21 410]

hello, that is the card, do the punch outs line up with the numbers at the bottom are they the options, what do they mean ? mine has a52 b55 also. thank you

[mockingbird812]

Don't think there is a logic to the casual observer (me) of how those holes represent the alpha numeric codes, but I believe they do. This was the early digital age and the computers of the day would "read" these punch holes and assign meaning (either alpha or numeric) to them. Tell us more about your car.