Short 4. gear

Hi!
Just got a question before I order.
I have got a PX200E from 1986, but I don´t know which one of the two short 4. gear I should order. The chassi nuber is: VSX1T0410207 if that´s any help.

Best regards
Patrik Grann
Sweden[:bounce:]

Hmmm!
Guess it´s the old one then?![:drink:]