I recently bought a vintage 1980's royal sabre and took it out for a test. I used the "notch" feature which gave me a high tone for silver and low tone for nickles. What a fun machine to use and operates as advertised.The tone I.D. was spot on even to the point I was detecting and one spot under a tree I got a mix of high and low tones that were repeatable with every sweep. Well, I dug and sure enough there was a small coin spill of nickles,penny s and a couple quarters. The coins were just common coins but I was happy with what the royal was telling me was in the ground. I'm happy I purchased the Royal,its fun to use,I just wish Tesoro was still in business producing their great machines......Steve