First diesel 40 series (1 Viewer)

[Big Daddy 69]

G’day,
Just wondering what the first year was that you could get a diesel 40?
Any help is greatly appreciacted!

 

[-MaTTi-]

I would say 1974.

 

[Economist LC76]

HJ45 in 1972, BJ40 in 1974

 

[Big Daddy 69]

HJ45 in 1972, BJ40 in 1974
View attachment 2083655
Are they delivery dockets? Where did you get them? How do you know that is the earliest? Thank you for your help!

 

[Big Daddy 69]

I would say 1974.

Why is that?