Chief Seat post plating

[tfburke3]

What was the original plating on the seat post for a 1950 chief.
Starklite says cad was original,but the pic of their "exact "repro shows a square connecting link which would be Harley?
Greer shows hard chrome which would seem the better surface.
What did the factory do?
Thanks
Tom

[1950Panhead]

Original was cad with rectangular link.

[tfburke3]

Original was cad with rectangular link.

Thanks again 1950 for the info.
Tom