You don't. Cleaning coins unless done by a professional can only harm the coin's value. Cleaning will never, ever, ever, do anything but harm a coin's potential value. Unless you want your coin to be worth no more than 5 cents, don't clean it.
James Nickel was born in 1930.
One way to clean and nickel is to dip it in vinegar.
nickel
A US Indian Head nickel dated 1930 is common, coins in average circulated grades sell of $1.00-$3.00
Assuming the coin is circulated and has no mintmarks, retail value is $1.00-$4.00 for most coins. The 1930 Buffalo nickel is a very common coin.
The coin is called either an Indian Head nickel or a buffalo nickel, but not "buffalo head". After all, it shows the entire buffalo and not just its head, LOL! Please see the question "What is the value of a 1930 US nickel?" for more information.
Buffalo Nickels weigh 5 grams and are made of an alloy that is 75% copper and 25% nickel.
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These coins are commonly known as either Indian Head or Buffalo nickels. Both names are about equally common. Please see the question "What is the value of a 1930 US nickel?" for specific information. 1930 is a common date Buffalo nickel, most circulated coins in collectible condition have retail values of $1.00-$4.00 but can be as high as $20.00
It was worth 5 cents same as today.
Retail is $1.00-$3.00 in average condition
If you were in the US then it was 8 cents.