Yes...a nickel plated S&W M19 with a 5" barrel would command a premium price as 4 and 6 inch barrels are the norm and M19's leave the factory blued.
I own a rarity myself...a nickel plated M13-3......with 3" bull barrel. Bought it used from a former Philadelphia Police detective who carried it as a backup to his duty revolver...before they went with the Glocks. Picked it up for $180.00 in the early 80's
DoD: Peace thru Superior Firepower