Originally, there were two designs of ITC Avant Garde, one being for the sole purpose of display, and the other for text copy.
The typeface was originally meant to be for the purpose of the logo of the magazine only, however the director of the magazine though the design was so futuristic, well recognized, and perfectly fit, he wanted it to be commissioned to be developed as an actual font. In 1975, a designer named Herb Lubalin created this typeface for the Avant Garde magazine. This font was a breakthrough for typefaces everywhere, taking letters where they have never been before.
Perfection is hard to achieve sometimes, but the guys who designed Avant Garde came very close.