12 Del. C. § 212

A will may refer to a written statement or list to dispose of items of tangible personal property not otherwise specifically disposed of by the will, other than money, evidences of indebtedness, documents of title, and securities, and property used in trade or business. To be admissible under this section as evidence of the intended disposition, the writing:

(1) Must either be in the handwriting of the testator or be signed by the testator and must identify the items and the legatees with reasonable certainty;

(2) Must not be inconsistent with the terms of the will; and

(3) Must not be inconsistent with any other writing permitted by this section unless the writing is dated in which case the writing with the latest date will control.

Notwithstanding the foregoing, in the case of a writing that includes both provisions for dispositions that are consistent with the terms of the will or any other writing permitted by this section and provisions for dispositions that are inconsistent with the terms of the will or any other writing permitted by this section, such writing shall be admissible under this section as evidence of the intended disposition of those items of tangible personal property that would be disposed of by the provisions of the writing that are not inconsistent with the terms of the will or any other writing permitted by this section. The writing may be referred to as one to be in existence at the time of the testator’s death; it may be prepared before or after the execution of the will; it may be altered by the testator after its preparation; and it may be a writing which has no significance apart from its effect upon the dispositions made by the will.