For its age, Google 'Hull Cartridge', e-mail them your serial number with a covering polite note (lots of please and thank you), and within a week they will reply with a manufacture date within a three month span of the year it was made . For its value, anywhere between £125 and £225 depending on condition (post a few photos and a detailed description and we will be able to offer a more accurate figure for you ). Atb: G.