I had to reverse your pictures as they are very dark. Is this model engraved "Arizona"? What kind of rear sight is that? I looks like a front globe sight that takes an insert. Any history of the gun?
My monitor is calibrated on a regular bases as it is used for photography and while his are a little dark they show much more detail than your version.
this gun is from germany, many years not used. This foto on my lcd is normal - lightness. i don't now what is "arizona model" :| maybe someone manual changing this gun ?
Same as the one this guy has but the rear sight is different.
By "Arizona" I am referring to what it says on the top rear of your gun. I can just make it out running diagonally across the receiver. Maybe that's part of a word?