Franklin Mint manufactures commemorative items. In this case, the coins would not be useful as currency.
No its a SCAM....they are worthless
If you mean? Was it plated by the Mint? No the US Mint does not plate any coins.
They are private mint issues and are not legal tender.
The National Collector's Mint is a real company and it is selling real things, obviously for collectors. Are the coins genuine? it depends. They DO sell real legal tender and historical coins. Legal meaning issued by the Official U.S. Mint. AND they also sell PROOFS and COMMEMORATIVES Proofs are recreations/copies of real/historical coins and therefore not legal tender, but can be based on official coins. A.K.A. the coins that collectors go for. Commemoratives honor specific events or things, so they can be official commemoratives or privately issued. (again not legal tender)
All real US gold coins have dates but not all have a mintmarks
They are 24 k gold plated
US coins minted before 1979-1981 (the exact date varies with the coin) don't necessarily have a mint mark. Coins without a mint mark were minted at the US Mint facility in Philadelphia. Since 1981, all coins except for the US cent will have a mint mark; for Philadelphia it will be a "P". US cents, often misnamed "pennies," minted in Philadelphia still do not carry a mint mark even through 2007.
The US Mint never struck any 100 dollar coins for circulation, only Platinum Bullion coins have a 100 dollar denomination.
If you bought precious metal Proof coins from the Mint or from a reputable coin dealer and the packaging is intact, they will be made from whatever the packaging says they are made from and, there will probably be a signed "certificate of authenticity" with the coins.
Only the years 1942-43-44-45 have 35% silver content. you can identify the coins by a large mint mark P-D-S on the back of the coin above the dome of Monticello. But not all of the 1942 coins are silver, a Denver mint and Philadelphia mint were struck in copper nickel and don't have the large reverse mint marks.
Franklin Pierce's real name was Franklin Pierce.
If your asking about 1963 Double Headed Lincoln cents? No authentic mint errors exist.