Yes, Alfred I probably talked about this before.
The right and left most chome trim items on the dash are those that hold the fresh air vent and defrost vent.
One of the photos here shows the louver assembly as removed from the trim. The other shows the parts that you can have replated--that is the base, the defrost flap, and the bezel.
FROM THE BACK, I believe a few tiny screws hold the louver assembly into the bezel, with a spring washer the size of the bezel. Remove those screws, and the louver assembly as a complete subassembly come off.
The louver assembly consists of 8 vanes, all different. There is a "C" shaped casting in which one end of the pins fit into. Two wires, springy, hold everything together.
To remove, you need jeweler's pliers, and carefully remove the wire. It is like a puzzle. Remove the wire on the other side. When you do, the louvers will "flop free". The wires hold it all together, provide tension. Unbelievable engineering.
You can then take it all apart, clean, polish etc. each vane. The pins are cast into each vane at the end and that's what they hinge on. Complex? You bet.
You need to take lots of detailed photos to determine how it all comes apart so you can get it all back together again.
No honest plater would try to re-plate those vanes, unless they had a small table-top set up. The potential for losing one in a tank is too great. I just replated the base; the bezel and the defrost flap, and spent a lot of time cleaning the vanes and polishing them by hand.
Removing the defrost flap is difficult. It pivots on a roll pin. You need an appropriately sized drift pin punch to drive it out. It is not easy. Once you get it out then you have the third piece that can be plated.
I was told by experience restorers NOT to do this. I did it anyway, and it was only by divine intervention that it all worked out. I would never do it again. Much simpler tasks on this car have failed miserably and I can not believe I actually did this. So, you have been warned--don't do it. But if you do, this information is as good as any out there.
Those vanes are the only chrome on my car that was not replated or replaced. SO, if you want to see some less than perfect chrome next time you see my car, amidst all the perfect shiny stuff, bring a magnifying glass and look at my fresh air vents.