Thanks for the thoughtful comments! I'll try and address a few points in the order they were raised.
AfterTFD - John said, "The background on the JP came out of the bluing tank that color. I think it's probably due to the recast layer being chemically a bit different than the rest of the steel. The recast layer is a thin hard surface that results from the EDM process I use for my mark."
Re engraving the bolster - I have mixed feelings but as Coop pointed out, it's not my decision. Laura ('my attractive wife') likes it as is.
Re photographing the bolster - Of course the bolster is all one big beautiful compound curve but lit the way it is, it shows flat. That's a photogapher error and there are several ways to avoid the problem, some during the set-up and/or some during post-processing, but all rather time consuming.
Ideally, if I had one of those super-duper shooting tables with hooks, racks, and all manner of gee-gaws, I'd have the ability to place a specifically shaped "gobo" between, the bolster and the principal light source, at just the right distance etc. - that would not only reveal the curves but also the very fine longitudinal polishing lines.
And here's a different take on the knife: