Peace

Appellant appeals from the judgment of the Superior Court of San Francisco County entered after the court found him guilty of a violation of Penal Code section 211 (robbery) and found true the allegation contained in the information that he had inflicted great bodily injury upon the victim who was 60 years of age or older. (Pen. Code, § 1203.09.) Appellant contends on appeal that (1) the trial court in sentencing appellant disregarded the fact that appellant was mentally disturbed; (2) the trial court erred in failing to state its reasons for enhancing his sentence because he had suffered a prior conviction; (3) Penal Code section 1203.09 is unconstitutional; (4) the waiver of a jury trial was invalid; and (5) he is entitled to work time/good time credit.

At approximately 10 a.m. on October 28, 1978, Ms. Doris Peters, then 67 years of age, was returning to her home at 52 Waterville Street in San Francisco from the grocery store. As Ms. Peters approached her house, someone came up behind her and grabbed her purse. The bag of groceries she was carrying fell to the sidewalk. Ms. Peters lost her balance and fell to the ground. Ms. Peters was dragged five or six feet when the…