Would a 2nd model American with full nickel finish, (including hammer and trigger guard), ivory grips and nitre blued screws be considered a special order gun?
Letters to Biggs and Spencer Co., Chicago, Ill. 1872
(screws are not mentioned)
Mike
Mike, Post a few sharply focused pictures. I have not ever come across a nickel American with nitre blued screws unless they have been replaced. Finding some with nickeled trigger guards, triggers and hammers is not that unusual on the early Americans, however, we all generally accept it as "refinished" if it has a nickel Trigger Guard, Trigger and / or Hammer.
Side plate seam is the most prominent "tell-tale" of a non-factory or standard refinish. Had it been refinished by S&W or another professional (e.g. Charles Duffy, Dave Chicoine or a number of other early 20th century craftsman) the side plate fit would appear near seamless.
There is another thread about a month or two ago referring to 2nd Model Americans, factory cut for stock. In that thread a reliable post mentions that back in "that" day, S&W was not capable of performing a Nickel finish. Those that wanted nickel were usually sent out by the distributor or dealer. Famously, M.W. Robinson NYC shipped guns are most prevalent in this configuration / condition as they had the best platers and engravers in a small concentrated area of the City. Also, M.W. Robinson did much work, in house.
I would not be the least bit surprised to discover that Chicago had the same quality craftsmen in the City.
But, don't worry ... Ed, Jim, Ralph and the rest of the crew will check in shortly.

and Mike Maher will check in too, I hope.
LOL, Ed posted a reply a few minutes before mine.
Here you go, I found the link:
Smith Wesson Model 3 American lettered