5 Pfennig coins are small and made of brass-clad iron or of bronze; five Mark coins are big and made either of silver or cupro-nickel.
Do you mean as collectibles or for their exchange rate? If you have that many coins you'd need to know their dates and mint marks. In general, 1-pf coins dated 1969 and later are worth more than face value only if they're uncirculated, and coins from 1948 to 1968 are worth more only if they're either uncirculated or nearly so. As for the exchange rate, at the time these coins were discontinued in 2002, they were worth about 1/2 of a U.S. cent. However, it would be very difficult to exchange them now unless you were at a major bank in Germany.
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.
None of the US Mints placed mint marks on their coins from 1965 through 1967. Even if there is a way to know how many were minted in Denver it wouldn't matter because there is no way to know which coins they are.
See Related Links below for a list of values. You need to know the coins' conditions and mint marks before making a determination of value.
The usual location for coins dated 1968 or later is on the obverse near the date. Coins from 1968 to 1979 without a mint mark are from Philadelphia. Before that, mint mark positions varied significantly. You have to know the date and design of the coin to find its mint mark. The site www.coinfacts.com lists positions for every mint mark and date since the first mint marks were used starting in 1838.
Yes, I want to know my marks list.
It isn't an error, on most coins, the Philadelphia Mint didn't get a mintmark until 1980. So your coins were simply minted at the Philadelphia mint and not an error.
The folder number is not related to the coins' values. You need to know the coins' dates, conditions, and mint marks. You can then get an idea of their retail values by checking a site such as the two linked below
Yes, they usually raise the value of the coin. Especially if it is a rare mark like CC. However there are some coins where those struck at a branch mint (i.e. not at Philadelphia) are actually less expensive, so you have to know both the date and denomination.
During World War II, the exchange rate between the German Mark and the US dollar varied significantly due to the economic conditions of the time. At the beginning of the war, the exchange rate was around 2.5 German Marks to 1 US dollar. However, as the war progressed and Germany's economy deteriorated, the value of the Mark plummeted, reaching extreme levels of inflation. By the end of the war, the exchange rate had risen to over 4 trillion Marks to 1 US dollar.
The best and easiest way to know the worth of coin is to take the coin to a dealer. Do not let them know you are selling the coins. Have it appraised. Try with different dealers and get the average value. Also try online. There are a couple of websites which can identify the coins worth. Next is to grade it. Also check for mint marks. Hope this helps.
That's too broad a question to answer as stated. You need to know what country they're from, what condition they're in, and if they're U.S. or German coins, what mint mark they have. If you have U.S. coins there are many good sites that list value charts. I've linked one of the better ones below.