During the depression (& its deflation) the Gold price was fixed at 20.67US per ounce. So it was a store of value & safer then banks at the time. But, Roosevelt outlawed the Ownership of gold in 1933 and put a 10 year gaol term on anyone who refused to surrender it to the FED within 25 days.
Silver which was not fixed fell approx. 30% in 3 years from 1929 but recovered the lost ground after that. Even though silver fell it outperformed stocks.