This is one used engine case for Triumph 650. Made in 1974 while the factory was struggling with a labor dispute/strike. My research shows that only around 980 units were produced that year, this is one of the 980. This was purchased for a project 2.5 years ago and has been stored indoors. Please look at the picture to see the condition, note the other item in the one picture. It helps explain background and provenance of the case. The T120V was produced as a five speed, so it can handle 4 or 5 speed transmission.