I call it the shallow notch, in case you want to riff on that....anyway, keeps things a little cleaner than a deep notch at the head with thin leaf.
Tried it yesterday. Pretty easy. I used to cut a similar shape out of the end of a wrapper, when wrapping a fecto. Don't know why I stopped. If you look at what they use for dies on machine made, it's essentially that. I don't have any such dies to show you a pic; but I do have this whatchamacallit, whereby the machine uses air to suck up the die cut wrap and puff it down in place. Here, admire this:
Ignore those tabs at either end where this device attaches... those aren't part of the shape. That slot near the upper end is where a pin flicks out quicker than your eye can can see to start the wrapper onto the bound fecto blank. That, and the similar end at the bopttom, are how the machine caps each end.
I was trying to use this pattern to make a logo for the business, like so:
... but I'm such an incompetent when it comes to graphics.
Anyhoo, similar shapes.