It depends how old the coin is.
The date and mint mark are on the the edge of the coin
An undated 20p coin, which was produced in very limited numbers, can be worth significantly more than its face value due to its rarity. While banks typically do not exchange such coins for more than their face value, collectors may pay anywhere from £50 to several hundred pounds for an undated 20p coin, depending on its condition and demand. Therefore, it’s best to check with coin dealers or collectors for its market value.
Only if the coin is so worn that the date is no longer visible.
They are not undated. The date on the newest golden $1 US coins (Native American Series and the Presidents series, which are being contemporaneously minted) is on the edge of the coin, not the obverse as previously. The Native American Series continue to portray Sacagawea on the obverse while receiving different reverses for each of the 2009-2012 mintings.
The Royal Mint advises that the undated 20 Pence coin is legal tender, so they are possibly not treating them any differently to any other coin. There were less than 250,000 released into circulation, the majority of which would now be in the hands of coin collectors, coin dealers or collectors of curiosities.
a one-yen coin: 2 yen
Answer it!!
$1
a euro coin would cost around 6.20 in south carolina
d cost 2-5$
Buffalo nickels with the dates worn off are still five cents and some people do make jewelry out of them.
something