2506 - Revival of revoked or invalid will.

     § 2506.  Revival of revoked or invalid will.        If, after the making of any will, the testator shall execute     a later will which expressly or by necessary implication revokes     the earlier will, the revocation of the later will shall not     revive the earlier will, unless the revocation is in writing and     declares the intention of the testator to revive the earlier     will, or unless, after such revocation, the earlier will shall     be reexecuted. Oral republication of itself shall be ineffective     to revive a will.