There's one like it for 65 Euro as we speak, on the German site. Not very rare over there , I see them quite often.
Not like this one! The one on eGun is much more common. This one has smooth grips back and front, hence John saying it's rare.
Vintage Airguns Gallery
..Above link posted with permission from Gareth W-B In British slang an anorak is a person who has a very strong interest in niche subjects.