For me, I consider debt based currency just a flat out scam, and I refuse to willingly be scammed on purpose, so dumping federal reserve notes for stuff like this is really the only option. The fact that it has enormous upside while FRNs don't just makes it that much easier.
The American silver eagle has the best liquidity so it's hard to recommend anything else, especially if you live in the US, but it's definitely worth getting at least one large bar just to look at:
I like JM Bullion for buying because they accept Bitcoin and you get a discount for ordering in Bitcoin.
Investment-wise, all you really need to worry about is cost of production in the grand scheme of things. The best gold miners to my knowledge (which are few and far between) can get it out of the ground at around $900 an ounce, while others are pushing more around $1200-1250, so gold is probably around cost of production on average already.
If any type of huge metals revaluation did occur by the government, it's likely ALL metals in the ground would instantly be nationalized rendering all mining stocks virtually worthless. Either that or they would let them keep mining but tax them at 90%.
Since a lot of this mining requires diesel powered engines and we seem to have hit peak conventional crude oil in 2004, we are probably well past the point of peak gold and silver in terms of ability to take it out of the ground, and what's in the ground for us to access in the first place.
As for silver cost of production, SRSROCCO did a long post on that the other day and it seems silver is around cost of production too:
https://srsroccoreport.com/forensic-evidence-why-silver-price-manipulation-will-end/
I'm buying bars because minimizing premium avoids me needing to understand the premium market. However, I do think it might make sense to add some coins for liquidity and easier divisibility especially if the price were to increase a lot. Thank you for the recommendation on silver eagles.