I paid Rudy $90 for an NOS one in 2002 and was glad to get it. I saw one sell on ebay for $325 not too long ago. My guess is there won't be a big demand for them and also, not a lot of owners know that's what the car should have as many were replaced with the '51 style.
One interesting note is that Edgar Kaiser's '51 Henry J, which I have here, was undoubtedly made from '53, has a '53 ornament but a '51 tip - yes, that's common but on this car, it has the metal pin that prevents the tip from turning; not something someone would likely install if they were replacing one. Who knows, they may have mocked that up for it or maybe because of who's car it was, someone did a thorough job when they replaced it.
The fellow that lived just a couple of miles from me, who restored a '53 Corsair (which he sold in the bulletin last Aug) had some made and gave me one for all the help I gave him. He never told me how or where but it looks great if you ask me. I'm not sure how many you might sell but I do know they are very rare indeed. Here's the car he restored