Social Security number stamped into parts of truck?

[Forum4130rl]

Hello all,
When I bought my truck about a half a year ago, I was perplexed by the fact that all the original steel wheels including the spare, the rear axle, one of the rear trailing arms and the drive shaft all have the original owners last name and social security number stamped into them???

At first I just kinda shrugged it off, kinda thought it was neat, but then I got to wondering if this is or was a normal thing to do? Was this a factory or dealership option, or just the owner of the truck doin it on his own? Just curious I guess... Anybody else ran into this?

Goes to show you how times have changed, you'd have to be insane to do something like that now.

Cheers,
Rob