[Elecraft] cleaning a key

[Ron D'Eau Claire]

Julius, N2WN wrote: 
As I
recall, all of the military keys were silver coated
(tending to oxidize black). 

-----------------------

My WWII Vintage J-38 has a main frame piece made of a silver metal that I
haven't identified, a rocker arm that is nickel-plated copper, and all brass
thumb screws, pivots, shorting arm and plate leading from the bottom contact
to the hot terminal. 

It was my understanding that there was quite a variety of metals and
platings used, based on what was available during the war. 

Mine was in fair condition when I got it. It had obviously been stored for a
number of years, but wasn't damaged. I have an ultrasonic cleaner that did a
bang-up job on it. 

Ron AC7AC