Appendix C in "Why the Best-Laid Plans..." has an interesting discussion of the evolution of the Harry Browne permanent portfolio. Silver plays a prominent role in all versions from 1977 up to 1981. The gold:silver ratio in those versions ranges from about 1:1 to almost 3.6:1. Then silver drops off the map in the final version of the PP presented in "Why the Best-Laid Plans..."
Harry writes (page 481) that due to the volatility of silver
Ignoring the market timing and non-Permanent aspect of this move, does anyone have any further insight into why Harry made this change?...it seemed to make sense to get silver out of the Permanent Portfolio...
It would be interesting to know what he had to say in his newsletters about silver during this period. Are they compiled and available somewhere? Coincidentally, silver is back to the $40 per ounce range (nominal) where Harry dumped silver. That would be an inflation-adjusted $105 or so, though.