Correct finish for '69 rotors

[nuch_ss396]

Hey guys!

I recently found a set of quite pristine front two-piece rotors for my Camaro.  They were never turned and I took a very light
pass just to get them perfect.  Then, I put them on the steel abrader and cleaned them like new.  Question I have is over the
correct finish to be applied. 

Should they be a natural cast color?  What about the wheel studs?  Were they black oxide, silver cad., etc.? 

I saw an NOS two-piece rotor on eBay recently, but I always question if the finish applied to service parts was the same as
that applied to production pieces.

Any thoughts or images you can share?

Thanks,
Steve

[nuch_ss396]

Here are the images of the NOS two-piece rotor I was referencing above:



What do you think about the finishes applied here ?

Steve

[Pex68]

About 99.9% positive that that's the way they came from the factory, less a little rust.  Bare Steel, Black studs.