[Lynn]

Stamp is good.

I am guessing someone did some work on those rods. I don't believe they were heated. The original pink rods were babbit dipped on the little end, and that is what the silver coating looks like to me. I have never seen the babbit dip look that obvious on untouched factory pink floaters. If they are original pink rods, they were probably blasted or shot peened before being babbit dipped. Traditional babbiting is almost a lost art.