The set should have coins from the Denver mint & the Philadelphia mint. 5 from each mint
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 "Crown" and the "Castle" are two of many mint marks types indicating where the item was made or minted. The Mint Marks are many and varied. There are at least three different "Castle" mint marks and two different "Crown" mint marks. Other mint mint marks include crosses, stars, flowers, moons, keys, animals, etc. all of which have many variations, and these are only the British marks.
No error coins of that nature are known. Also, starting in 2009 the mint mark appears on the coins' edge instead of on the front.
None of them will have mint marks.
Mint marks on coins indicate the specific mint facility where the coin was produced. These marks help identify the origin of the coin and can also provide insights into its rarity and historical significance. Different mints may have varying production methods, which can affect the coin's value. Common mint marks include "P" for Philadelphia, "D" for Denver, and "S" for San Francisco.
No they were not, but at that time mint marks were still hand punched into the working dies and the punch may have been shallow causing the D to appear smaller
The mint marks on an 1877 5 Mark Hamburg gold piece can typically be found on the reverse side of the coin. For Hamburg issues, the mint mark is usually represented by a "C" for the Hamburg mint. If your coin has no mint mark, it was struck in a different location, as the mint marks can indicate the place of minting. Always consult a reputable coin guide or numismatic expert for precise identification and valuation.
12 so far if you include different mint marks 36.
In general, "S" mint marks from the San Fransisco mint are more scarce than other mint marks when it comes to pennies. But just because it has an "S" on it doesn't make it a rare, or even scarce coin.
Mint marks were placed in different locations on each different coin series.
They're actually called mint marks rather than "symbols". There have been 8 different mint marks over the years. Four mints are currently in operation: P = Philadelphia Mint D = Denver Mint (1906-present) S = San Francisco Mint W = West Point Mint. In the past, there were: CC = Carson City Mint C = Charlotte Mint D = Dahlonega Mint (1838-61) O = New Orleans Mint Most coins of the Philadelphia Mint earlier than 1980 are unmarked. Currently the Lincoln cent is the only coin that does not show a "P" when struck at the Philadelphia mint. --http://en.wikipedia.org/wiki/Mint_mark
There aren't any collectible varieties, only different mint marks as on all Lincoln cents:No mint mark = PhiladelphiaD = DenverS = San Francisco (proof coins only)