This decal is used on the following models: 
 
1968 Yamaha DT1
1969 Yamaha AT1
1969 Yamaha CT1
1969 Yamaha DT1B
1969 Yamaha DT1S
1970 Yamaha AT1B
1970 Yamaha CT1B
1970 Yamaha DT1C
1970 Yamaha RT1
1971 Yamaha AT1C
1971 Yamaha CT1C
1971 Yamaha DT1E
1971 Yamaha RT1B
1972 Yamaha AT2
1972 Yamaha CT2
1972 Yamaha DT2
1972 Yamaha RT2
1973 Yamaha AT3
1973 Yamaha CT3
1973 Yamaha DT3
1973 Yamaha RT3
1974 Yamaha DT125A 
1975 Yamaha DT125B
1976 Yamaha DT125C. 
 
This is a new, reflective foil, replica, of the factory original decal. The second & third pictures, showing the motorcycle engines, are used for reference purposes only. May fit other models not shown above.