Gold Silver Coin Tester-Magnet Keychain Hammer Pliers Testing Set - Coin Resonance Testing Tool,for Adults Lovers Family The coin tester combines magnetic design with acoustic resonance analysis, delivering clear and interpretable graphs while maintaining pocket-sized portability, perfect for enthusiasts confirming coin details anytime and anywhere The gold piece tester includes a mini magnifier, silicone piece holder, measuring mat, wooden hammer, sturdy carry pouch, and piece magnet clip, enabling users to examine pieces with precision while protecting their surfaces for collectors or hobbyists who need reliable equipment for accurate assessments The silver coin tester performs true silver non-magnetic checks using two methods like acoustic and magnetic tests, enhancing reliability for collectors who need precise identification of in diverse trading or appraisal scenarios The gold and silver piece tester ensures accurate results through precision machining, offering stable vertical suspension testing with a moderate clamping force for consistent performance in evaluating specimens without damage, ideal for collectors verifying authenticity With its ability to avoid oil stains and prevent scratching, this pocket tester ensures long-lasting durability and consistent functionality, offering peace of mind to collectors examining rare numismatic items regularly Color: As Shown Material: Metal Package Contents: 1*set pocket pinger coin tester Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.