NRS 133.130: Effect of revocation of subsequent will.

If, after the making of any will, the testator executes a valid second will that includes provisions revoking the first will, the destruction, cancellation or revocation of the second will does not revive the first will unless:

1. It appears by the terms of the revocation or the manner in which the revocation occurred that it was the intention to revive and give effect to the first will; or

2. After the destruction, cancellation or revocation, the first will is reexecuted.