For Professional Collectors: The Coin Acoustic Verifier generates clear resonant frequencies for advanced coin authentication. Paired with precision calipers measuring diameter against certified standards, this system validates specimens from 1/10ozt fractional coins to large 10ozt pieces with high accuracy. Coin Tester Kit: A comprehensive toolset designed for authenticating silver and gold coins through advanced resonance testing. This versatile kit is compatible with leading verification systems including Precious Coin Tester, Pingcoin, and Coin Tester platforms. Ideal for collectors and dealers, it provides reliable multi-factor authentication to assess a coin's authenticity. For comprehensive coin authentication: Secure your silver coin in the included holder for precise resonance analysis; the sound profile reveals key authenticity indicators. Use the magnetic clasp to test metallic composition; silver exhibits minimal magnetic response. System Integration: This tester interfaces with leading numismatic analysis applications such as Precious Coin Tester, Pingcoin, Bullion Test, and Coin Tester platforms, enabling advanced analysis and automated reporting features for detailed authentication documentation. Metal Acoustic Tester: A portable authentication solution for gold and silver coins. Simply secure your coin in the testing chamber and release for instant analysis. The compact 4-inch x 5-inch carrying case fits in any pocket, making professional-grade verification available anywhere. Color: As Shown Material: Metal Package Contents: 1 set * gold testing kit Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to vary slightly from the real thing. The measurement allowed error is +/- 1-3 cm.