Hi, I have had this expansion tank sitting on my shelf for a few years now, I bought out a collection of parts from a gentleman a few years back and, decided its time to move some iron off my shelves.

I don't know a lot about it, I do see any issues with it were it looked like it was leaking or anything like that, but I would pressure 
test it to double check before you install it on your Thunderbird. I think this may work for other Fords, Lincolns and Mercurys but I am not 100%, part number says 1961. I believe this will work for 1961-1965, for 352, 390, 406, 427,   Selling it for $125, because I do not know the exact condition, because I have not actually ran it on an engine myself.   Make sure to cross reference to make sure it works.

Thanks Jason 
Denwerks Vintage Cars.