Claudian letters

Writing systems tend to be very resistant to change, but if anyone could change the alphabet, it would be a Roman Emperor. After all, Julius Caesar managed to rename the month of Quintillis after himself. So when Claudius looked at the alphabet, he figured he could add some letters. He added three: Antisigma (Ↄↄ)represented /bs/ and /ps/, in the same way that X represents /ks/ or /gs/.Digamma Inversum (Ⅎⅎ) represented a /w/ sound, and H-Dimidia (Ⱶⱶ) represented a vowel sound between /i/ and /u/. While these letters were used on some inscriptions during Claudius’ lifetime, they were abandoned after his death.