| 1972 Flyer This is an early 1970s distributor's brochure, probably 1972. The PX-10 is shown with the Nervex DuBois cut lugs which were used on this model in 1972, but not 1971 or 1973. In addition, the option of special colors for the UO-8 was available, and the chain-wheel guard appeared around 1973. 
                                
                                  |  |  |  |  |  |  
                                  |  | AO-8 & G45-CXE &UO-18
 | PA-10 & PR-1- &PX-10E
 | UO-8 |  |       |