The coins have been struck every year since 2000 at the Philadelphia, Denver & San Francisco Mints so 11 years X 3 Mints = 33 coins
All real US gold coins have dates but not all have a mintmarks
Please post a new question with the coins' dates and mint marks.
Mint marks are located in different places on different coins. To know where to look for the mark the denomination and the date of the coin must be known.
Designs are struck or minted onto coins, not engraved. The stars on a coin usually represent the states - either 13 for some older denominations or 17 on the Sacagawea dollar, because there were 17 states in the Union at the time she guided Lewis and Clark. The small letter that appears on many but not all coins indicates where it was struck. Current mint marks are: Philadelphia - "P"; all current cents from Phila. and other coins before 1980 do not have a P, however. Denver - "D"; on all circulation coins made in Denver. San Francisco - "S"; on proof coins and on some circulating coins before 1976. West Point - "W"; on commemorative and bullion coins only.
Germans refer to coins or currency as Marks. The currency in Germany is called a Deutsche Mark, and can be found in different amounts of currency.Ê
Australian coins minted at the Melbourne Mint do not have a mintmark.
Deutschemark coins normally have dates on them like nearly all coins. However the dates can be very small and not prominently placed in the design, so you may have to look carefully. There was no hard and fast rule, but higher-denomination coins tended to have the date on the same side as the denomination, while smaller coins (denominated in pfennige) often had the date on the opposite side.
They are marks, in Finnish "markka". One euro is about six marks, a little bit over.
Please post a new question with the coins' dates and mint marks. Alternately you can check a price guide such as the one linked below.
Time and bacteria can sometimes leave marks on coins.
The set should have coins from the Denver mint & the Philadelphia mint. 5 from each mint
Because there are less of these coins than of others of that series. Since there are less collectors are willing to pay more.