Extant

Something that exists in the present, often referring to something that has wheathered time and still exists today.

The term extant is often used by historians and literary scholars.

Example: "The only extant manuscript (of Le Morte Darthur) that predates Caxton's edition is in the British Library, London." - Enclyclopedia Brittanica

"The earliest extant manuscript written in Sylhet Nagri is Talib Huson by Gholam Huson (1549)." - Banglapedia