Probably the 1933 double eagle. Last auction was around $7 million, IIRC.
The 1943 coin is about $3 at most. The 1951 coin is about $1 at most.
This coin is most likely worth the silver value.
A very common coin, average value is $2.00-$5.00 for most coin
In collector value it all depends on the rarity and interest in the coin. Some other factors that effect the value are what it's made of and the metals value. The highest denomination coin produced by the US is the $100 One-Ounce Platinum Bullion coin.
The value of a 1943 half rupee coin is actually highly dependent upon a number of factors. Most important being the condition of the coin.
Send it to a coin expert and they will most likely be able to tell you what it is worth.
The 2001s is currently the most value, proof 2001s is currently 100.00
In the UK, the highest value coin in current wide circulation is the £2 coin.
Most show heavy wear and have a value of $50.00-$90.00
The best reference source to detrmine the most up-to-date value of your silver coin(s) is 'Coin Values' magazine.
One example would be a 2012 US penny. For the most part, any coin that you find in your pocket change is of little value.
This is not an uncommon coin and therefore has little value. Most circulated coins are valued at $3 or less. A fully uncirculated coin could reach a value of $10 to a collector.