Sam,
Here is the link from a prior thread about the Black 69 SS 300 Deluxe Post Sedan.
https://www.yenko.net/ubbthreads/show...2/fpart/1/vc/1
As you can see I too have yet to determine what 0354? is on that particular IBM interior data card.
Here is what I do know about your IBM card....remember your car has a unique interior package for a 1969 Chevelle.
Your car is a 1969 300 Deluxe 2 door coupe....#13437.
Therefore is has a complete deluxe interior package....different than the Nomad Wagon, Greenbiar Wagon, Concours Wagon or 4 door Sedan, El Camino and Malibu.
Hence the first photo of your trim tag...that came out of the front seat with the codes A52 and B55....this tells me that is was for a "Front Bench Seat" with "Front Deluxe Seat".
Why the differnce between the 1 and the 4...I have no concrete answer....other than my guess is something to do with "Front Seat" vs. "Rear Seat".
I have also seen these punch cards with and without columns...perhaps they differed from plant to plant.
Sam...I believe your car was built in Baltimore? The Black 300 Deluxe Post Sedan was a Kansas built car.
Dan.