Susan, not "suies"
Dollar, not half dollar (you did look at the coin's denomination, didn't you?)
Anyway, circulated 1981 coins of any denomination are worth only face value. Go ahead and spend it.
Susan B. Anthony never appeared on the US half dollar coins, only the dollar coins starting in 1979 to 1981 & 1999. The obverse design of your 1902 half dollar is that of "Miss Liberty" and is one of the Barber series (1892-1915) of half dollars. In average circulated condition the coin has a value of $14.00-$30.00
The only U.S. one dollar coin dated 1981 is a Susan B. Anthony dollar. They are not referred to as Liberty Dollars. None were released into circulation or made from gold. It's been gold plated. Look at the coin again and post new question.
Susan B. Anthony on the 1979-1981 & 1999 one dollar coin and Ben Franklin on the half dollar 1948-1963
a half dollar
Susan B. Anthony, thus the coin is name the Susan B. Anthony dollar.
The One Dollar coins from 1979 to 1981 & 1999
The Susan B Anthony dollar is the same silvery color as the US quarter, dime and half-dollar. However, the coin contains no silver.
The Susan B Anthony dollar was made from 1979 to 1981 and again in 1999. But the coin isn't really silver - it's made of copper-nickel like other circulation-strike dimes, quarters, and half dollars produced since the 1960s.
Susan B Anthony was on a US dollar coin minted from 1979 to 1981 and also in 1999.
From your description the coin is a common Susan B. Anthony dollar (1979-1981 & 1999) that is in circulation today. It's just a dollar coin, spend it.
Only in proof and mint sets. None for circulation.
First off, WHY DO YOU HAVE A TWO AND A HALF DOLAR GOLD PIECE??!?!?!?!?!?!?!?!!