hi chaps , a builder friend of mine found this last week when he was re-roofing a garage, the owner didnt want it , it looks like its been left in the corner for a long time, im interested in it but dont know what to offer, its a bit rusty down the outside of the barrell and outside of the cylinder, its very squeaky when you cock it, so i havent fired it yet, but the trigger feels very crisp when i de-cock it, i want to use it for pigeons at work, i used to have a hw35e about 20 years ago, would this be about the same power?, just bought some proper gun grease but i dont want to do anything to it untill i can work out a price, any ideas on age and value ?, serial number is 37351

thanks in advance,, (sorry about pic, took it with my phone)