My original post was intended to contrast the difference between "real" money and the increasingly worthless paper dollars in circulation today.
Just a few dollars face value worth of silver coins today has enough silver value to fuel up your vehicle. Paper dollars from the same era are basically as worthless as those printed today because silver is a real commodity and paper is worthless.
A lot of people are concerned about buying silver because they're afraid the spot will continue to drop, but even if demand for silver doesn't increase in the next 10, 20, 30 or 40 years it will still eventually take more paper money to buy silver because paper dollars will continue to lose value, but there will always be a demand for precious metals. So, in the end you'll always be able to exchange silver coins for more than face value.
Actually paper dollars from back then do have collector/resell value similar to silver value, especially in good condition..You still cant go up to the gas station and fill up your tank and hand the gas attendant 5 dollars in silver coins, they will be taken as face value and most of the ignorant gas station employees won't even know what the coins are and will laugh hehe.. But your point is clear silver is a great buy if you can purchase it cheaply and resell high but if you paid 60 dollars for the silver and it costs 60 dollars to fill up then its kind of the same difference..it will actually take some of the 60 in profit to go about selling it, burning gas etc meeting up with a buyer etc, now you only get 50 dollars worth of gas...