To Blue or Not to Blue

[rcathey]

To add to what Jim said,
You’re not gonna do much to *increase* the value no matter what finish you apply.
You might look around your area for someone that does parkerizing or maybe even duracoat (or similar paints).
You’d have a solid corrosion barrier either way and wouldn’t be out a huge amount of money. $100 to $150 or so.