Bar Code Deluxe

I recently bought this gem of a catalogue from P22 type foundry. It's exquisite with it's black felt cover, deckle edges, metallic inks, die-cut, translucent sheets and Mohawk's superfine paper throughout. But the thing I had to capture is it's debossed bar code on the back. I have not seen anyone do that yet. Don't know if it's permissible, or an artistic statement on utility vs. aesthetics. Either way, it was a delight. The actual content of the book needs to be seen to be appreciated. And this collector's piece from P22 is one that will surely call back to me again and again.