U. A. C. = "Unaltered Augsburg Confession": Denver church's confession

     I was recently shocked to hear a podcasting LCMS pastor criticize Prof. F. Bente's strong defense of the Unaltered Augsburg Confession, or "U.A.C". I stated in that blog post that "In earlier times one would occasionally see the acronym "UAC" in the name of a Lutheran church on their outdoor signage in front of the church building." I had assumed that there was probably no longer any current LCMS congregations who display this to the public.  But to my surprise and joy, while watching a video of a lecture by Rev. Dr. Adam Koontz, I noticed that the placard on the front of his podium exhibited just this confession.  At right is a wider picture, and below is a blow-up of the podium placard, with my notations:

Not knowing exactly what the Roman numeral MDXXX indicated, I looked it up and found that it was the year of the initial reading of the foundational confession of the Lutheran Church at the Diet of Augsburg in 1530 — The Augsburg Confession.  — This follows my blog of Dr. Koontz and the subject of his video. The congregation that he now serves is in Denver, Colorado ("Can there any good thing come out of… Denver?") and they have demonstrated themselves to be truly Lutheran with their designation as a church of the U. A. C., on their podium as well as on their street sign.  May they teach why the word "Unaltered" is so important, and why Bente's "biased" strong defense of it was necessary.