Go through second to get to First transmission

I hope it's okay to post here. I did try in the mechanical section but I did not get a response.

Years ago I drove a tri-axle dump truck that had a very odd transmission. I believe it was a Fuller transmission and I believe they called it a 7-speed and it had a deep reduction switch for it that you could shift through all the gears in deep reduction.

Second gear was to the left and up and if you wanted to go into first you actually had to go through second to get to first.

So second gear was to the left and up and then you went kind of a little more to the left sort of on an angle and there was a neutral again and you went into first. So you had to go through second to get to First.

Just wondering if anyone heard of such a thing or ran a truck with it or if anyone knew the model of it. I'm just curious because I never saw one like that before and I never saw one like that ever again.

 

The one that I drove was a one stick transmission but it did have a 270 or 290 Cummins