Centurion never made a bike. They were a marketing company. And like many of those marketing brands, information is scarce. Realize all the brand specific vintage sites out there were not started by the brands, but instead by some individual collector that just wanted to share information, at their own expense, with the rest of the world. Its amazing to me how many have done it.

To take on this effort for a marketing brand is a lot of effort. They are all long gone. It takes someone with time/dedication/and money to collect catalogs and photos and create a website. Its a labor of love for sure. Catalogs pop up on ebay from time to time.

I find Wikipedia information on bikes is marginal. Better off just searching this forum via google. That style stem shifter is throwing me a bit, as I usually see them on 1970s era bikes. But the headbadge style is 1980s. Drive side pic always helps.

I've owned hundreds of bikes, from dozens of mfrs. Anymore except for a handful of brands (Schwinn, Panasonic, Miyata, Trek, Cannondale), I ignore serial numbers on dating, and just go straight to component codes instead.