In general coins have higher values.
old coins -yes
One is still worth exactly $100, because it's not rare or old enough to be worth more.
Wine Car Coins Jewelry Artwork
Depends on the coin
Due to inflation the Mexican peso became almost worthless. Small purchases were costing hundreds of peso. Instead of making 1000 peso coins and printing million peso bills, the new peso was introduced with a value of 1000 old peso.
Old military coins, due to their rarefied nature, are worth more than their coin value. If an individual has a hardy stock of such coins, they can be easily sold for profit on sites such as eBay or Craigslist.
it says in your coin
Generally speaking, old coins are worth more than face value, but by how much depends on factors like denomination, date, mint mark, and condition.
It isn't, because you heard a mistaken version of the trick question. It's really "Why are 1998 $1 bills worth more than 1997 $1 bills". The answer (ba-DING) is ....... 1997 $1 bills are worth $1,997 while 1998 of them are worth $1,998.
Yes, banks are required to take obsolete bills and return them to the Treasury. However, taking an old bill to a bank generally isn't a good idea because they're only permitted to exchange them at face value. High-denomination bills, very old bills, and (sometimes) unusual bills can be worth more to a collector or dealer.
They are positively worth something. An old penny is always worth at least a penny.
Old coins are valuable because they're old and rare. The 1945 penny isn't worth remarkably more than other coins of its approximate age (in fact, it's worth a lot less than a 1944 steel penny, or a 1943 copper penny, both of which are extremely rare).