What year fuel fill cap under the seat

[tbearatkin]

A friend posted in FB this picture of his of a Seabee MUTT in Vietnam, I noticed there was no fill cap on the side like every other one I have seen. Is this a in-field modification or did they make some that way.

 

[Black Ops]

Picture looks reversed, that is the passenger side.

 

[m38inmaine]

Yup reversed, that's the battery box top under the seat. All the fill's were exposed on M151's. Interesting tread pattern on the tires, locally procured I wonder?

 

[tbearatkin]

Funny how I spotted the missing fuel fill but missed the missing steering wheel.

I also missed the spare tire on the wrong side.

 

[Hell On Wheels]

notice the 30cal vs. M60 pig