I looked at quite a lot of CS models prior to buying mine and from my experiences your rifle is probably worth £150+ with that peep/diopter sight despite the non standard parts fitted

As Lakey says, the 'C' - Club model was quite rare and the peep sight alone would be difficult to source and perhaps pricey to buy

I fully restored mine as the photo etching had long gone.

There is little stamping on the metalwork so dressing and polishing out the surface pitting is achievable. It took me 9 - 10 hours to prepare mine for a reblue but the results were well worth it


John