I've just spoken to the dealer and according to my serial number ( the car is in storage 60 miles away for winter), I need a speaker cover with a chromed surround which is NLA from Chrysler, so this black one would not match the other side. And this black one is also available from dealers in North America.
I need to keep looking, likely in NOS or from a wreck somewhere which is probbaly a better source.

Le Chat.