I'll try to shed some light on the "Nickel 28" issue.
Jim Supica's "Standard Catalog Of Smith & Wesson" states in the Model 28 section (under variations):
Nickel: A few reported made with dull nickel finish, reportedly as salesman's samples.
This thread from the "Smith" forum shows a picture of Smithnut's pair, and a short discussion.
NICKEL 28
Jim Supica's "Standard Catalog Of Smith & Wesson" states in the Model 28 section (under variations):
Nickel: A few reported made with dull nickel finish, reportedly as salesman's samples.
This thread from the "Smith" forum shows a picture of Smithnut's pair, and a short discussion.
NICKEL 28