Passed my driving test at 17 in a 5 ton truck - no syncromesh or indicators either. The way we used to reverse would give people a heart attack these days. Sit on seat, start, select reverse and gently engage clutch. Then open door, left foot onto running board, right hand on steering wheel and right foot on accelerator. That way one was standing outside the cab, facing backwards whilst steering and regulating speed. To stop, simply manoeuvre back onto seat and adopt normal driving position. Sounds scary, but it was actually quite easy and (relatively) safe. Considering mirrors were an optional extra in those days and a load on the truck meant one couldn't see through the cab rear window, the only other way was to get someone to guide you backwards.