Here is one of the “classic” Prussian sniper scopes used during World War I. This 3x scope was made by R.Fuess in Berlin. Scopes made by R.Fuess were sometimes painted green.
Luxor 3x sniper scope made by Oigee manufactuer in Berlin. This model was one of the most used during WWI. Its deported mount is also typical and wears the same rifle number “n° 712 i” than the scope main tube. Meter dial is Prussian 1-10 style.