In 69/70 Centurion was started as a brand of WSI, they were Importing bikes from Japan and labeling them as Centurions, a few years later they would introduce the Professional model which was made by Acer-Mex (same company that made Windsor Bicycles). which continued on til the late 70's when production of the Professional was moved over seas. in the mid 70 Centurion offered BMX bikes and quickly changed the BMX line to its own brand as Diamond Back in 1978 and in the early 80's sold  Mountain Bikes.  Most all of the models were made in Japan and some lower end models were made in Taiwan.