1979 S Susan B Anthony Type 1

Thanks-yea I'm not real good on the whole cameo effect yet-telling the difference between bus strike uncirculated and proof with cameo effect? But judging from my other proof coins I'm gonna say this is probably a business strike? I know right out of the mint is pretty easy to tell but what I'm getn at is don't proof coins that get into circulation eventually lose that cameo effect? Of so,can you still tell the difference from a business strike in that case?

Here is a business strike coin and a proof coin side by side. The shine says it all.

In the modern era, business strikes with the S mintmark can be found on 1968-1974 cents, 1968-1970 nickels, and 1979-1980 SBAs. Non-circulating business strikes with the S mintmark can be found on 1971-1974 40% silver Ikes and the 1981 SBA(Mint Set).

Distinguishing a modern business strike from a proof is not too difficult in most cases. A proof strike will have brilliant fields that will still show on a coin worn below EF and the strike will be much stronger than that of a business strike. Fine details such as hair and steps will be clearly seen even on a circulated proof vs. weak and indistinct on a typical circulated business strike. Compare the edge of a proof coin with that of a business strike, notice that the proof appears to be thicker. Since proofs are struck twice with higher pressure, the rims will be fully formed and sharply squared vs. shorter and smoother rims found on a business strike.

Currently, West Point only strikes bullion coins and the occasional commemorative issue. In the past, they have minted small batches of business strikes sans mintmark to supplement Philadelphia. There are no distinguishing features on a West Point business strike and all of the dies were prepared in Philadelphia. The one exception for business strikes is the 1996-W Roosevelt dime found in Mint Sets.