Yamaha 150 Models

[chegui11]

Hello,
I have two Yamaha 150, 1987 and I would like to know how two differentiate the model 150ETXH, 150ETLH and 150,S150, L150.
Thanks:

[boscoe99]

The last three seem to be missing part of the model identification.

[rodbolt17]

if you notice D was actually used twice as a year designator.
don't get bit.