I was hoping that I could find a parts illustration in the 1974 Chrysler parts manual, for the "build" of the door panels. All I found was a ref to the complete panel (group 23-92-5) rather than the items thereof.
When I looked in "Group 23 -- Body" (found the 1974 Chrysler Parts Book file at
www.mymopar.com, which should carry over into the later Formals, as to illustrations but not the specific part numbers for the later years), I could find the door pull strap escutcheon pop-in trim and the inside "remote control" door handle items, but not any reference to the door courtesy light lens. PERHAPS it is in the "Interior Lighting" area instead?
Happy Digging!
CBODY67
+++++++++++++++++++++++++++
After further digging in Group 8 . . .
Door Courtesy Bulb Type 211-2 Chrysler part number 9431808
Door Courtesy Lens C/Y door 3488962 Qty = 4 total
===========================
Putting "Chrysler 3488962" into Google resulted in some nice finds!
The first one was a source for the 3488962 3D printed lenses! Plus other things "Chrysler" and "Mopar". It has a front and backside picture of the lenses. With a part number for ordering. I did not investigate pricing. It did mention the material and that a higher-heat material would be best. In another lens listing, it mentioned another material, with an extra letter on its designation. All of this in the "Chrysler" listing.
When I clicked on the "Mopar" icon, some other neat things are listed. Including a plastic Magnum 500 center cap, which might need to be painted/plated. A few other neat things, too. Look and see what you think.
Further down in the Search Results was a link to a post in this website, circa 2019, of a parts "find" of NOS Chrysler parts. I did not check on that, though, as I suspected whatever was going to happen, already had happened.
-----------------------------------------------------
REMEMBER, IF you might find NOS lenses, they will be at least as old as the 1974 model year, IF the 1974s are the same lenses as the later model years were. So any cautions about handling will apply as the lenses are as old as the car is, generally.
DO find somebody with an old Chrysler Parts Manual for your year model to verify these part numbers, as to correctness for your model year! I suspect they did go all the way to the end of 1978 production, but have no way of verifying that myself. So DO CHECK! Even if the difference might be a distinctive silk screened logo or outline casting.
DO search the bulb manufacturer websites (i.e., Sylvania) for info on the "211-2" bulb and what might be similar to it (available locally), as to socket base dimensions, candlepower, and wattage. Converting to LED might be an option, but knowing the OEM specs can assist in that crossover. Personally, I would stay with the incandescent bulbs for cost savings and "being correct" for the car and its intended ambience. Once the lenses are removed, a simple cleaning and shining of the reflector should put things back to OEM-production condition, normally.