OMG!... mine was a 1969 Brigestone 175 Dual Twin !! Rare, with the carbs mounted at each end of the crank with 'induction valves' ... pretty rad. design and ran like a 'mudda'.....Twin-leading-shoe front brake and cable op. rear brake it stopped better than any bike of it's time !
Had it in 1975 and eventually swapped it for a Yamaha 200 Electric.... ( yes, electric start !, wow )