You should never polish old coins, even if they have turned dark or black.
You should never polish a silver dollar or any old coin. Any standard silver polish you have at home will damage the coin's surface and reduce its value.
To polish an old silver dish you should buy a good silver polish and rub it with a non-abrasive material. Silver can de delicatie so be careful!
By making use of the abrasive polish, you will be able to remove the polish residue. After the old silver polish residue has been removed, its polishing is very important.
wash it in silver water! You could polish it.
Cleaning coins is not a good idea, it will damage the coins and lower or destroy the collectible value. Please consult a dealer or collector before the coin are cleaned.
One dollar bill silver dollar ,year is 1923
It's only partial silver -- worth about $2.00
1957 $1 bills are silver certificates. In the old days, you could trade that dollar for $1 worth of silver, or silver dollars. Right now, you can sell them or keep it.
If it is a collectable coin that you are considering selling, it should be left in the same condition you received it in. Cleaning coins generally reduces the value. For general purpose cleaning of coins I put a tiny dab of plain old mint toothpaste on each side of the coin and GENTLY rub it between my fingers. Rinse well and repeat if necessary.
I would immerse it completely in water and leave overnight then leave it to dry completely before cleaning with silver polish. The salt should dissolve in its own good time.
Only use special silver polish - other substances can seriously damage your silver. Since silver can be easily scratched, it's best to apply the polish to 100% cotton balls or and old toothbrush with softened bristles. There's more detailed information in the article below.
There were no US silver dollars struck in 1970. Silver was removed from all circulating US coinage in 1965 and the Eisenhower dollar (which contained no silver but was the same size as the old silver dollars) wasn't first struck until 1971.