Square triggerguard?
Novak sights?
Good shape? Need a bit more info.
The rounded triggerguard and novak sights (they were standard by the time the rounded triggerguard arrived on the scene) are worth more. People don't like the square triggerguard guns as much. Look at the bottom of the grips. There should be a D shaped indentation with a little dimple above it. If the dimple isn't there, then you have the older grips (if you dropped the gun just right the grips would shatter, releasing the mainspring and disabling the gun). Newer replacement grips remedied this and are inexpensive, but somebody might try to use this for leverage for price reduction.
I would probably expect to see$350-450 range for this gun if you sell it outright. Much less (about $200-250) if you try trading it on another gun.