I was going through a stash of stuff I had yesterday, and discovered something I hadn't ever noticed before. I came across what appears to be (although I didn't look at it that closely), a leather tank cover for a CB400f. See pics below...
I didn't actually properly fit it on yesterday, but I placed it on the tank so you can see what it looks like. It has the Honda lettering on both sides which matches the lettering that is stenciled on the back of the seat.
Was this a factory thing? If so, I've never seen another before.