1968 Fan Clutch, KR application, date codes?

[Craner]

I've sent out the fan clutch for restoration.
It has the correct Ford stamping at the fan mounting OD surface.

The question I have is about the stamping mark on the inner surface of that plate ( see photo )
Is that the build date? "C119"

Also, were there any other ink printed markings on the cad plated surface near the front spring?
Thank you
Fran