[Milsurplus] U-78/u Connector

[Glenn Little WB4UIV]

While cleaning the garage, I uncovered a box of Parts for connector U-78/U.
All of the parts are the same.
These appear to have been cut off of the cable and is the contact 
part of the connector.
This is the metal housing with the contacts installed.
The back of the housing has three threaded holes where the back of 
the connector was once installed.
I do not have this path.
The contact points of the connector are very black.
This can possibly be cleaned.

Does any one need any of these before they are scrapped for the silver?

73
Glenn
WB4UIV