Yes, all the silver war nickels have mint marks, even Philadelphia. There will be a large letter P, D, or S above Monticello.
Yes. All the silver war nickels had a large mint mark on the reverse side above Monticello, even Philadelphia.
Nowhere, because all shield nickels were minted in Philadelphia.
1968 Jefferson nickels were only struck at Denver and San Francisco so they all should have mint marks. 1968 was the first year for obverse-side mint marks so it should be on the front between the date and the tail of Jefferson's wig. Mint marks were smaller at that time and were added to the dies by hand so it may be more difficult to see than on more recent nickels.
Check it again. By 1980, all U.S. nickels had mint marks. That said, a 1985 nickel is worth 5 cents.
There are no mint marks on 1905 Liberty Head nickels. All were minted at Philadelphia, which didn't use a P mint mark at that time. 1912 was the only year that Liberty Head nickels were made at branch mints. The mint mark position on these coins is on the back, below the dot or "button" at the left of the word CENTS.
D is the mint mark of the Denver Mint. You may also find an S for San Francisco. Coins without mint marks or with a P were made in Philadelphia. The same mint marks have been used on all denominations of 20th and many 21st century coins, not just buffalo nickels. In the past there were mint marks such as O for New Orleans and CC for Carson City among others. Plus some modern bullion and commemorative coins have a W for West Point.
The "S" is the mint mark for the US Mint at San Francisco, California. All US Mint facilities place their own letter, which identifies them, on nearly all of the coins they mint. The larger than normal mint marks on the "war nickels" were placed there to indicate the coins were of a different alloy than previous nickels, containing 35% silver instead of nickel.
Only those made in 1912. All "V" (or Liberty) nickels dated 1883 to 1911 were struck at Philadelphia which didn't use a P mint mark at that time. 1912 V nickels were struck at all 3 then-operating mints. Look at the reverse of the coin, to the left of the word cents between the rim and dot. It's very small and can only be a "D" or "S". If no mintmark is seen, the coin was minted in Philadelphia.
Of course. Except for the famous "war nickels" made from 1942 to 1945, all coins made in Philadelphia did not have mint marks until 1979/80. During most of that time Philadelphia was the largest Mint so the majority of coins in circulation did not carry mint marks. Check the Related Question for more information on your coin's retail value.
None of them will have mint marks.
No. The only U.S. nickels that contain any silver are those dated 1942-1945, as nickel (the metal) was needed for the war effort. They are distinguished by the large mint marks on the reverse side, above Monticello. All nickels before and after contain a blend of 75% copper and 25% nickel.
It was minted in Philadelphia. Prior to 1980, nearly all coins made in Philadelphia didn't carry mint marks. The only exceptions were nickels from 1942-45 and 1979 dollars.