Well they look nothing like my original Ancos - which work fine.
Go figure.
As far as the original Tricos, I have yet to see 'em.
Maybe when the OP posts pictures we'll see what came on the car.

For pushbutton replacements in 15" - its scrounging old stock. For 16" pushbuttons, Classic industries has reflls. Maybe others too. It's not like this was unique to Chrysler products.

Alternatively, the ANCO U series *might* fit OK using the end clip. Its only about 020 narrower. There's a Trico series that may work as well - same deal, retention uses the end clip on the claw tip. I did that for years too. Difference was back then then parts stores just handed you the correct width refill. Now most stuff is too narrow an the folks behind the counter don't know what fits...