A lost alphabet was found in a manuscript

The Caucasian Albanian alphabet is an ancient writing system whose trace had been lost before its rediscovery in 1937 by Ilia Abuladze. The researcher brought it to light in manuscript 7117 of the Matenadaran, a 15th-century document containing a simple list of letters with their Armenian phonetics. This discovery later allowed linguists to decipher sacred texts written between the 5th and 8th centuries.