One problem with re-chroming parts is that most chrome guys want to make the parts perfect. They want to charge you big bucks for that, as well.
The regulators we are dealing with had less than perfect surfaces, and if we are going to restore these regs correctly, we need someone who can recreate the original finish.
I am a fan of thick shiny nickel with a chrome overlay, but this isn't what all of the originals looked like. The spun cans often have marks left in them (HW in particular), as well as other turning remnants in many others.
I'd love to find a plater that would work with the original surface.