I have an Original Model 50
Its a 1978 model, metalwork & bluing is excellent, nigh on perfect, stock has its original finish but has a few scratches.
Its a .22 & has been totally stripped cleaned & relubed with new spring & piston washer recent fitted.
It shoots very well with its standard iron sights
I also have a diopter sight for it but this may be of more use on a 177 version.
An idea of value for the rifle & diopter sight would be appreciated.