Please explain why numismatics is for suckers and how would one by stock on an exchange anticipating a run?
You could buy stock in silver producers/mines.
But mostly the money trading in silver is in the commodities markets; mainly out of Chicago but with electronic trading and floors closed due to covid it can be traded from the basement of your parents’ house. Most people who trade stocks online probably do not yet have commodities trading capability but it can be done. You have to have the right brokerage and hopefully an understanding of how the market works.
The market for physical is mostly in industrial use, coin collectors, as a hedge against inflation, stashed for the zombie apocalypse to come, and as a means to store and transport wealth without having paper bills or banks to deal with. If Silver were to go to $300 an ounce, a 1 pound bar of silver would be worth close to $4,500.
If you want to pay 15% over the actual value of the metal contained in the coin, rock on.
Numismatics are for suckers because “experts” who are in on the scam tell you what they are “worth.”
Bullion PM coins are buy/sell at spot price plus or minus a set % commission.
OTOH, the U.S. has produced some really beautiful coinage over the last couple of centuries. For myself, I'm especially partial to Morgan dollars. I have been since I was a kid, and some moron gave me one to buy a pack of smokes at my parent's grocery store. I have a lot of 'junk' silver that I picked up over the years at face value. All of that is a great investment, because there is no way to lose money at face.
On the gripping hand, if you're really just interested in buying silver, you're better off buying bullion. See my post here that goes into a little more detail.
I like silver, because it's easier to have smaller value in hand than gold, thus easier to trade. If these guys can run up the price to my long-time sell point, I'll be cashing in several pounds of bullion, and will wait until the price falls again to start buying it all back. If they don't that's OK with me. I'll keep holding.
It appears the second part of your question has been answered. Concerning the first part, which is ambiguously and unkindly stated --- in a normally cycling market numismatic coins are highly rated as an investment, mostly long term investment. Mild inflation and wide spread prosperity increases interest in the venue.
If you buy metal coins as a hedge against inflation, obviously in a financial crisis the demand for bullion coins will far outstrip demand for collector coins, in general. If you own, for example, silver proof sets, and you find yourself needing liquidity, you will likely have to negotiate the best price that you can, hopefully more than spot prices or melt prices.
Junk silver, bullion coins, possess an immediate market value - supply and demand. Obviously commodities, in anything, are worth what the buyer is willing to pay. What I have stated are just generalities. But if, for example, the dollar were to collapse (which it is likely to do sooner or later with this present regime), those in a position to barter for goods with precious metals should have an advantage. Since numismatic coins are valued under the same barter dynamic, it could be difficult to find a deal that serves as a profit to the seller. IOW, bullion prices and numismatic prices could differ significany.