A gallon of gas cost about 25 to 28 cents in 1960. Average gas prices as of today across the US is 2.62 per gallon. A pre-1965 quarter has .18018 oz of silver in it. Todays silver prices are about 15 dollars per oz. A pre-1965 quarter has $2.71 worth of silver, so a gallon of gas still costs the same amount of silver as in 1960. Kind of put things in perspective about how the dollar is worth less, but silver has held its value and still purchases much of the same stuff for the same amount of silver.