I don't have this keyboard any more:

The eejits put two backslashes on the same keyboard, one on each side. The trouble is, one of them is where a PC has backslash, so I'd press what I thought was \ (in fact, `), get `, look down at the keyboard to wonder what I did wrong, and see a key that really does say \ so why is it typing `? Oh right, I need the other \ key.
Since I was switching between Mac OS and Windows, it drove me mad having the key mislabelled, so (as you can see) I carved out half of \ with a knife to make it vaguely resemble what that key does in Mac OS. That was the NMB version, with the screw-up.