You have the ID correct, and it appears to be an original nickel gun. It has the slightly later barrel style with the ramp front sight. You can see the matching SN on the bottom of the grip frame and barrel. The stocks seem not to fit 100%; if they are original to the gun you'll see the SN stamped on the inside of the right panel.
The photos of nickel guns are actually best in indirect sunlight, so good choice there
. Hope this is helpful.