Much depends on maker and grade of your gun. The rib of your gun should haveing writing to the effect of FINE Extra Fine Diamond ect. Give us the proof marks and symbols found under the barrels and on the action flats. You can find these when you remove the barrels. Small guage will bring exta money no matter the grade. Condition is also very importand,does the action still show any case color,is the stock sound with strong checkering ect. A low grade in 90% shape will bring more than a top grade at 10%.