Chrysler broadcast sheets are the line-side production form for B-body and E-body cars in the muscle era. Eleven-by-seventeen-inch perforated paper, sprocket-fed dot-matrix print, every cell either machine-printed by the order entry system or hand-stamped by line workers. The sheet rode with the car down the assembly line and was supposed to be removed at end-of-line. In practice many ended up in seat springs, taped to the heater core, in the trunk, or behind quarter-panel trim — where they survive today, fragmentary, water-stained, sometimes burned.
The VIN row at the top of the sheet is the most damage-resilient cluster — both because it sits at the top where the paper is usually intact and because every other cell can be cross-validated against the codes encoded into the VIN itself. plenum's 1970 B-body and E-body schemas read the broadcast sheet directly; fender tags carry a subset of the same codes for cars where the sheet has been lost.