The artifact is an untranslated letter, written in Latin and Italian and signed by the future Pope Pius VIII who reigned from 1829 to 1830.
The letter is dated February of 1822 when Pius VIII was a cardinal and head of the Apostolic Penitentiary under Pope Pius VII.
It is signed F (ranciscus) X (averius) Card (inalis) Castillionus M (ajor) Pens’ (itentiary).
The letter, seal, and signature are all in very good condition.