On a warranty repair order, the dealer put the card in a credit card-style fixture and ran the roller (in the mechanism) over the repair order (placed on top of the CertiCard) so that the owner's name and address would be imprinted on the multi-layer carbon papered repair order. Just like when you got gas with an oil company credit card, back then.
When the car was received at the dealership, when it was sold, the dealer used a Dymo Label Maker to affix the owner's name, address, and city onto the card. It was then kept in that holder you mentioned so that any warranty repair orders would have correct owner information on them.
Not just "select" cars, but ALL Chrysler products. I believe the cards were actually metal with the logos and such silk screened on them, front and back.
GM used a metal card that was affixed to a particular back page in the owner's manual. So EVERY warranty claim that was done, the dealer's employee had to get into the glove compartment to get the owner's manual out, put that page into the holder (mentioned above) and then make the imprint on the repair order. The owner's name and such were done as the Chrysler situation was done, with the Dymo Label Maker (which was pretty high tech for that time, and not as readily available as they came to be by the mid-'70s).
To me, the Chrysler "under the hood" orientation was better than how GM did things. The card and holder were in a place that was pretty well protected and not readily apparent unless you knew to look there. Just had to make sure they put it back in the holder!
Also, as the 5/50 warranty was in effect back then, and transferable to the 2nd owner (for a fee), the information on the card could be changed easily.
Hope this helps,
CBODY67