Under the bottom bracket is a plastic piece with Raleigh on it. It has mavic ma40 wheels, cinelli handlebars, Shimano 600 2x6 gears, it weighs exactly 10kg (EDIT: without chain, derailleurs and front qr skewer), has shimano 600 brakes, a steel frame and has campagnolo top tube/friction shifters. I cannot see a serial number anywhere on the bike. Thank you for any help. Harvey
Edit: I'm not just asking what year it is, I would also like to know brand and model if anyone knows since I cannot find a serial number.