Texas Estates Code - EST § 359.004. Method of Proof for Securities and Other Assets

(1) an official letter from the bank or other depository where the securities or other assets are held for safekeeping, and if the depository is the personal representative, the official letter must be signed by a representative of the depository other than the one verifying the account;

(2) a certificate of an authorized representative of a corporation that is surety on the personal representative's bonds;

(3) a certificate of the clerk or a deputy clerk of a court of record in this state; or

(4) an affidavit of any other reputable person designated by the court on request of the personal representative or other interested party.

(1) state that the affiant has examined the assets that the personal representative exhibited to the affiant as assets of the estate;

(2) describe the assets by reference to the account or in another manner that sufficiently identifies the assets exhibited; and

(3) state the time and the place the assets were exhibited.