I inherited a the above a little while back. It's boxed and probably fired less than a dozen pellets. I was wondering what it was worth. If it's worth very little, what is what I suspect then I'll use it; which leads me to another question; as it has been unused for many years what should I do to lubricate the piston/seal. There doesn't seem to be external access, unlike my old Webley Senior where it says 'oil here'!

Any advice/comments appreciated.
TIA Ken.