Originally Posted by damonsong
I took some pictures of it, along with the original case. But realized its hard to explain through pictures, so I just made a short video about the strap and case.
Leica M5 original strap and case
That is really really helpful! It turns out I actually have one of those straps (didn't know what it was actually) but the leather is all brittle. I am going to have a new one made. And I agree, that case situation does not look very useful other than for storage in a bag.