I found two inscriptions on a building in central Italy (both in Latin). The first one describes how two guys with lots of titles decided to erect the building and it ends with a commonly seen A.D. MDCXXXII.
The second one states that the previous building collapsed and a new one was built by other two man with multiple titles. At the end it says "A.S. CDDCCLXXI".
What does this mean? I find it particularly strange that they use "A.S.", which I couldn't find on the list of abbreviations on Wikipedia, and "CDD", which I cannot make sense of (it would be too early if it meant 900). Does anyone know?