If its the earlier one with 7059 on the side then I would say if truly mint £85. Why? because with the correct set of Apel low rings they are my favourite combination to have on a FWB Sport. That combo looks amazing, and what I have in my collection. I shot one so set up for years and its just the biz.
If a later with BDC, if they did them ???, then £65. A BDC isn't necessary for a 4x40 scope.
Now thats a lot, and its the mint that is worthy of the premium.
Mount marks or of lesser condition then £40 or less.
The Moonlighter 3-9x45 are the sexier; I think sexier than the bigger one. I have two, early with BDC but not parallax. The last had parallax.
The non parallax ones can require reparallaxing to air rifle ranges to get the most out of them. The mint one I have I wouldn't let go for less than £200, used ones go for £80-140.
So very correct for early 80's rifles such as HW35E, FWB's, or Original 45's. Apel mounts to top it off.
Optically they aren't that fantastic, and definitely not a Leupold. Even the odd Tasco could be brighter, though not all. But for air rifle quite good enough.