Coin grades consist of broad categories designated by letters, and within each of those there are finer subcategories indicated by numbers.
"F" stands for "Fine", a grade meaning moderate wear. Within the F grade there are 8 numeric levels ranging from 12 to 19. Thus an F12 is the lowest grade a coin can have within the Fine category and an F19 is the highest. A coin that's more worn than F12 falls into the VG (Very Good) or lower category, and a coin that's better than F19 becomes VF (Very Fine) or higher.
A Proof coin is a particular issue of a coin not a grade of condition.
The grade of a circulated coin is based oc how much wear it has.
To get that specific of a grade on a coin, it would need to be professionally graded though a service like PGCS, though a coin dealer in a shop could give an approximate grade.
The best thing to do is send it to a third party grading service. They will grade the coin for a fee. This will give you an accurate grade of the coin. You can also take it to a coin collector or use a free online guide like PCGS.
First, I will say the grading of coins is strictly a matter of opinion. It's sort of like beauty being in the eye of the beholder [what is beautiful to one may not be to another]. There are established guidelines, however, which will give you a pretty good idea of what the grade of your coin is. When a coin is in the "in between" grades [could be one grade or could be in the next higher grade] is where opinion comes in and opinions vary. There are coin guides which describe the various grades of each type of coin available at retail bookstores. If you have an old coin and just want to know what grade it is without a lot of study, then you could take it to a coin dealer and have him grade it for you. But remember, it is still just an opinion.
Coin grades consist of broad categories designated by letters, and within each of those there are finer subcategories indicated by numbers. "F" stands for "Fine", a grade meaning moderate wear. Within the F grade there are 8 numeric levels ranging from 12 to 19. Thus an F12 is the lowest grade a coin can have within the Fine category and an F19 is the highest. A coin that's more worn than F12 falls into the VG (Very Good) or lower category, and a coin that's better than F19 becomes VF (Very Fine) or higher.
You possess a Coronet Head $10 Eagle - a 1892 gold coin in fine condition (F12) is worth: $525.00.
A Proof coin is a particular issue of a coin not a grade of condition.
The grade of a circulated coin is based oc how much wear it has.
You have a Coronet Head $5 Half eagle coin - if this specific 1906 coin is in fine condition (F12), it is worth: $ 250.00
You possess a Coronet Head $5 Half Eagle. A 1905 coin in fine condition (F12) is worth: $250.
A 1906-D Coronet Head $10 Eagle gold coin in fine condition (F12) is worth: $ 525.00.
You possess a Coronet Head $5 Half Eagle - a 1872 coin in fine condition (F12) is worth: $ 400.00.
You possess a Coronet Head $5 Half Eagle coin - if this coin was minted in 1897 and it is in fine condition (F12), its value is: $250.
PF-69 is not a value, it's a grade. But it does affect the value, the higher the grade the more value a coin has. A PF-69 coin is one grade below a "Perfect" proof coin.
You possess a Coronet Head $5 Half Eagle - a 1872 coin in fine condition (F12) is worth: $ 400.00.
A 1885 nickel (aka - Liberty Head 5 cents) is worth in fine condition (F12): $1000; if this coin is in a mint state of MS60, its value is: $2300.The 1885 Liberty Head nickel is the key date of the series, retail values for circulated coins run from $480.00 to more than $2,000.00 depending on the grade. If you have this coin a dealer or collector needs to put a grade on it for an accurate value.