If you are talking about the current US $1 presidential series of coins, no. Such coins are struck in brass and lots of them were minted. Other than finding an error coin, those coins will only be worth $1 for the near (and most likely far) future. If you are talking about a coin set not made by the US mint, those sets very often do not appreciate in value past the value of the metals used to strike them.
The US didn't mint any dollar coins in 1969.
Purely an artistic decision. And not all presidents are facing any particular direction. Jefferson faces forward on the new 5¢ pieces issued starting in 2006 as do many of the images on Presidential $1 coins, for example.
Unless they are uncirculated or proofs coins made in 1959 to date have no extra value.
None of the Bicentennial coins regardless of denomination or mintmark struck for general circulation contain any silver or have more than face value. Only proof and uncirculated collectors coins sold from the Mint have premiums.
No US Dollar coins dated 1823 or any Silver Lady Head coins?
Are you kidding? They were the first to mint coins!
No there isn't any
Modified coins have no value as a collectible. Any value would be associated with the ring.
Modified coins have no collector value. Any value would be associated with the ring.
If you refer to the collector value of 1954 Australian coins, not much. Any value would be dependent on the condition of the coins.
None of the gold colored dollar coins made from 2000 to date have any gold in them. Only a few error coins and collectors coins have more than face value.
Modified coins have no collector value. Any value would be associated with the necklace.
Hoover is not on any US coins. He is scheduled for a $1 coin in 2014 as part of the on-going series honoring each president. Many mints have produced medals of the US presidents which resemble coins . Some foreign countries have minted coins with US presidents on them to sell to Americans- one of them may picture Hoover.
Modified coins have no collector value. Any value would be associated with the ring.
At minimum, they're worth the value of the silver.
No, cleaning any coin kills the collectible value of it.
Any value would depend on whether they are Mint Uncirculated, Proof, Year Sets, or circulation coins and what condition they might be in.