I mean, at least *I* think it's interesting.
The ignition/door key for 1964-1966 Chryslers is an Ilco 1764P (1764S for the trunk). You can still find these key blanks on eBay (for example here) if your locality is short on good locksmith shops or old-fashioned hardware stores. It looks like these keys were only used through 1966, but the ones I'm seeing listed for later years (for example P1770U/S1770U) look very similar and *may* be interchangeable.
Anyway, if you're in a pinch and need a spare key made right this second, you can also use a #15R from Home Depot (and possibly other retail boxes). I didn't expect they'd have anything that worked, but the nice man in the orange apron tried every test slot in the machine and found one that fit. I think this key is for later Jeeps, but I don't remember. It's a little bit thicker (~0.080" vs. 0.075"), but the keyway cuts are the same, and I just verified the one pictured below will start my '64 Dart.
(Yes, I'm paranoid enough to black out the key cuts when putting a picture of my stupid art car's ignition key on the internet forever. Sue me.)
