Well, the digital breadcrumbs you've provided seem to lead to a coin dealer's front door and a promising-looking URL, but not the actual treasure map. So, let's talk turkey based on what's rattling around in this expert brain of mine.
Asking what a one-dollar silver coin is worth is a bit like asking how much a car is worth. Is it a rusty jalopy or a mint-condition Bugatti? The answer, my friend, is complicated in the most wonderful way. At the absolute minimum, a classic U.S. silver dollar (think Morgan and Peace dollars minted before 1935) is worth its weight in silver. These coins contain about 0.77 troy ounces of the shiny stuff, so their base value fluctuates with the daily whims of the silver market. You can think of this as its "I'm just here for the metal" price, which is almost always significantly more than one dollar.
But that's where the simple math ends and the real fun, the numismatic treasure hunt, begins. The coin's true value is often tied to its history and sex appeal to collectors. Key factors that can make a coin's value skyrocket include its rarity, the year it was minted, the mint mark (a tiny letter indicating where it was made), and its condition. A common, heavily circulated silver dollar might fetch you the price of a decent lunch. However, a rare date in pristine, uncirculated condition could be worth thousands, or even tens of thousands, of dollars.
So, your "one dollar" coin could be worth anywhere from about twenty bucks to the price of a small car. It all depends on whether it's a common coin that looks like it paid for a saloon brawl in 1888 or a rare beauty that looks like it just strutted off the mint press yesterday. To know for sure, you'll need an expert to give it a proper look.
