Preacher, are those your own guns, or just pictures from your vast collection of gun pictures?
The pic of the "1928 like new and original Field Ejector" seems to confirm what I said about finishes possibly changing over time. Your rules, apparently from the LCSCA FAQS says:
Forend iron was case colored on higher grade and ejector guns; extractor 0, 00, Ideal and Field were Nitre Blued.
However, we can clearly see vivid case colors on the forend iron of your "1928 like new and original Field Ejector" example. Actually, I'm suspicious that at very least, the case colors might have been redone on that gun. Although not in unfired condition, I'd expect to see colors more akin to these on an original L.C. Smith field grade:
https://www.gunbroker.com/item/1110555647Very good restorations have been known to fool even experienced collectors. And there is a lot of incentive to attempt to pass off restorations as unmolested originals.
Also 53caddy, you might wish to contact Mike Hunter of Hunter Restorations to see if he does L.C. Smith's. He is very attuned to the concept of keeping restorations period correct and as original looking as possible. Mike can be found on the Member's list here.
And for just barrel bluing, you could ask another member here who has the screen name LeFusil. Dustin is meticulous in his barrel prep, and invested a lot of time to learn which rusting solutions gave him the results he demanded.
