Uppercase font with some alternates in the lowercase zone. You can find an extra third "S" in the "t" glyph. See also zhellbar, the solid colour version.
This is a clone of zhellbar Col eYe/FSI recently saw a type face with bits missing and thought "Looks interesting, can I do something with this idea?". I used one of my older sans designs but soon discovered that I needed serifs to get logic to the gaps ;) So I started work on a good serif design to use as the base. Here is my interpretation of what I saw, it looks rather different from the one that inspired me.