sorry brainfade yes I meant .22 other wise it would be a bloody powerful air rifle
my idiot wokrmate is always buying and selling stuff he would most likely shoot the thing out of a window at passing traffic then sell it to another imbecile
its something I inherited but i have no love of firearms and dont want one in the house where the grandchildren might play with it, as its been very well cared for I would rather it went to some one who would look after it
Im not an airgun bloke, but I've been really surprised how valuable air guns can be. If you have a boxed set, then almost certainly it has a premium value. Certainly you don't want to flog it off for a few quid based on a guestimate of its value.
If you can hold on until the next arms fair at Bisley (30th March), there are normally two or three air gun specialists there who deal with the historic and collectors' side of things. At least a couple of them are honest and will give a decent appraisal of the value, or even put you in touch with buyers.