I suspect that the rifle has been refinished, looks a bit too shinny?
Hard to say. I agree, it does look shiny but it may just be the lighting. The edges look nice and sharp, so if refinished it's been done well.
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.