Does it have a scope on it?
If so, what brand and what power?
How new is the gun?
Has it been fired? How much?
If it is scoped and the rear sight removed, do you have the sight?
Do you have the original box and paperwork?
First off, "1993" and "Classic 300WSM" don't belong in the same sentance since the short mags didn't come out until 2003.....unless its been rebarreled, but the numbers that statjunk posted are pretty close anyway if its in good shape. But, as with anything, its only worth as much as someone else is willing to pay.