You haven't delt with Speedway I see ...
https://www.fordbarn.com/forum/showthread.php?p=1695395
The cheap look would be the single micro coat of nickel. If it fits OK you could have it properly plated. That's copper, nickel then chrome and remove the chrome.
Expensive ... but avoids the drama of fixing up an original, beat up shell, to get it within mirror specs as required to show off the expensive plating.