Modern commemoratives and state quarters are usually easy for apps to recognize because the designs are distinctive. The tool will show the specific theme, year, and whether it has any extra collector premium. Most are common, but certain low-mintage or error versions can be worth more. I scan them in batches and keep the interesting ones aside. A convenient coin value checker handles commemoratives very effectively. coin value checker  – I used it on two full folders of state quarters and it helped me spot a couple of better varieties I would have otherwise overlooked.