Not so good results

[lptools]

Hello, This is a rare set of Williams 1/2" drive copper coated sockets!! Just kidding!! These were found in a very damp basement, and most of the plating on these was either rusty, or had lost its bond. So, into the tumbler they went, and this is how they surfaced!! I am guessing the copper looking material is what went on the raw steel before the plating?? Regards, Lou

[Bill Houghton]

Yes, I think copper (or at least something copper-colored) was not uncommon as an intermediate step in plating tools.  I've had more than one plated tool on which the plating, wearing off, was exposing a coppery undersurface.

I've even seen a couple of tools on which the company stopped at the copper plating.

[lptools]

Hello, Bill. Thanks for the info!!!

[Ken W.]

They now look like rare non sparking sockets too me now. 

[amecks]

Yes, I believe the term "triple chrome plating" meant a layer of copper, nickel, then chromium.  Nickel is slightly yellowish compared to chrome's bright silver.

[bonneyman]

They now look like rare non sparking sockets too me now.

Could go for big $$$ on ebay! lol

[Chillylulu]

Yes, I believe the term "triple chrome plating" meant a layer of copper, nickel, then chromium.  Nickel is slightly yellowish compared to chrome's bright silver.

I believe chrome is more like clear fingernail polish on top of nickel. 

In the early 90's I designed a fire sprinkler system in a plating plant. I has to spend several days there surveying the building.  The fact that chrome was clear was something I remember, but I've never confirmed it.

The other thing that was kind odf cool was they had plated a cheeseburger.

Chilly