The Elder Futhark
The full row is first attested carved on a single stone from around 400 CE. No source from the Viking age at all describes casting runes for divination as a formal procedure — the historical writing system and the popular modern fortune-telling practice built on it are two genuinely different things, separated by well over a thousand years.
The Kylver stone, Gotland (c. 400 CE), the earliest complete Elder Futhark inscription
The original twenty-four-character runic alphabet, ancestor of every later runic writing system.
