hehehehehehehe my lord I hate to tell you guys this.
Back in the "day" we had our plating done by 2 different companies.... Northstar out of Minnesota and Keystone out of Chicago ( keep in mind now, I'm going back about 40 years). Preferred customers or ones willing to pay just a little more............. got the Northstar! You could see a difference in the color of the chrome when laid side by side. I was told, it's the nickel....
I also know Keystone is now owned by LKQ, lord knows where things have gone over the last 40 years...............