Special Proceedings
Section 5. Proof at hearing. What sufficient in absence of contest. - At the hearing compliance with the provisions of the last two preceding sections must be shown before the introduction of testimony in support of the will. All such testimony shall be taken under oath and reduced to writing. It no person appears to contest the allowance of the will, the court may grant allowance thereof on the testimony of one of the subscribing witnesses only, if such witness testify that the will was executed as is required by law.
In the case of a holographic will, it shall be necessary that at least one witness who knows the handwriting and signature of the testator explicitly declare that the will and the signature are in the handwriting of the testator. In the absence of any such competent witness, and if the court deem it necessary, expert testimony may be resorted to.