No mint mark means it was minted in Philadelphia.
No such thing. There were no dollar coins minted that year.
If there's no mint mark, then it was minted in Philadelphia.
No mint mark indicates that the coin was minted in Philadelphia.
There were no dollar coins minted in 1992.
No mint mark means the coin was minted in Philadelphia.
Not always, no. If it was minted in Philadelphia, then there is no mint mark.
If it has one, it is on the reverse just above DO in DOLLAR.
Look for the mint mark.
No silver coins minted in Philadelphia have a mint mark.
No mint mark indicates that the coin was minted in Philadelphia.
You are going to have to provide the year the coin was minted - the mint mark 'CC' (Carson City) was minted on multiple year Silver Dollar coins.