Copper pennies require checking both the date and the current copper melt price. A good identification tool shows the year and gives you both collector value and melt value estimates. This helps you decide whether to keep them for numismatic reasons or for metal content. I usually scan in batches of twenty. For copper coin sorting, accurate coin values guidance is a big time-saver. coin values – it helped me identify several better dates among my pennies and also showed when melt value was close to collector value.