IF - emphasis IF - the gold chain is not soldered to the coin, it is potentially quite valuable depending on what mint mark it has, if any, on the reverse side under the eagle.
Numismedia quotes the following approximate retail prices for 1872 Seated Liberty dollars in XF (Extremely Fine) to AU (Almost Uncirculated) conditions:
No mint mark - $450 to $600
"S" - $800 to $2000
"CC" - $6000 to $10000.
In any case you should get a couple of competing estimates before trying to sell. Remember that a dealer will offer wholesale price, maybe 25-30% less.
In perfect condition, it could be worth somewhere around 160$ or maybe a bit more.
$3 in average condition, $8 in perfect condition
$3 in average condition, $8 in perfect condition
In perfect uncirculated condition it would be worth $5.
A 1969 silver Kennedy half dollar is worth $5 inn perfect condition. The value of the silver is worth $2.87.
Usually around $4. They are worth $8 in perfect condition.
In perfect uncirculated condition it is worth $6. In normal used condition is is worth exactly $2.
If it is in perfect uncirculated condition, then it would be worth $60. In normal circulated condition, it is worth $20.
Unless in perfect, uncut condition then I doubt anymore than face value.
It is worth $1.75 in circulated condition. Perfect examples are closer to $6.
Assuming the coin has no mintark, the 1922 PEACE dollar is the highest mintage and most common coin of the series. If your "perfect condition" coin has a grade of MS-63 the retail value is $34.00. No Peace dollar regardless of date or mintmark has been given the grade of MS-70 (perfect- flawless)
In perfect uncirculated condition, a 1995 $5 US Dollar note is worth $10. In any other quality, it is worth face value ($5).