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Not a trading strategy, but a buy and hold type of strategy such as the Permanent Portfolio. Gold ownership by the public was illegal in America until Jan. 1, 1975, but the gold price had been allowed to float from around 1969 until 1974, after being a fixed price by the government from 1934 to ~1968. The price increased a huge amount from ’69 to ’74, but I feel like it was just rising from its artificially fixed price to its market price during that time. Do you think the “illegal era” pre-1975 should be included in a backtest of a strategy including gold, such as the Permanent Portfolio? Or maybe substitute a precious metal that was legal to own pre-1975 such as silver?