According to online sources I use, it looks like it was made in 1996, which means it's probably a Gen2 gun (no fingergrooves on frame, and no accessory rail in front of the trigger guard). If it has a rail, but still no fingergrooves, it is what is called a Gen2.5; a transitional model between Gen2 and Gen3. If it has no obvious damage (cracks, bent or missing parts, etc.), it is most probably a solid pistol. It can still use the latest G21 Glock factory-made magazines, and if you find a load it likes and have an experienced Glock shooter do the shooting, it might surprise you with how accurate it can be.
If you can find a local Glock armorer, they can give it a quick check-up and tell you if it needs anything. Sometimes large Glock Stocking Dealers will have folks on staff that have been armorer-trained by Glock.