Angerthas Moria

We're told that the Dwarves of Khazad-dûm learned of the Runes of the Certhas Daeron from the Elves of Eregion, so the Angerthas Moria cannot predate the founding of Eregion in II 750. Eregion itself survived for nearly a thousand years, and doubtless the Dwarves' system of Runes took some time to develop into their own form, so in actuality the Angerthas Moria probably did not emerge until some time after this early date. Eregion was destroyed in II 1697, so this is the last possible date for the adoption of the Dwarves' Runes, though in practice such a late date seems highly unlikely.

The Dwarves fled the Balrog of Moria in III 1981, and soon established themselves at the Lonely Mountain of Erebor. At some point after the settlement of Erebor in III 1999, the Runes of the Angerthas Moria evolved into the Ereborian Cirth. It seems unlikely that this would have been an immediate transition, and in practice the Angerthas Moria probably continued in use for some time, even though Moria itself had been abandoned.