More to explore:
Franco Bollo Postale. These stamps were from independent Italian states before the unification of Italy through the 1860s and 70s (Italy actually fought three wars of independence). These are specifically fro m Roman States, which started issuing their own stamps in 1852, and discontinued in 1870, when they joined the unified Italy and started using Italian stamps. The problem? There are A LOT of forgeries of Roman States stamps out there. I bet these are forgeries but we'll see.