{"product_id":"coin-ping-test-holder","title":"Coin Ping Test Holder","description":"\u003cp\u003eThis holder is specifically designed for conducting the ping test on gold and silver coins. The test involves lightly striking the coin with a wooden or plastic object, producing a sound that helps identify whether the coin is genuine or counterfeit. Precious metals like gold and silver emit a long, clear tone, whereas base metals produce a duller, shorter sound. The design ensures the coin is securely held without direct contact to prevent damage, and is optimized for 3D printing.\u003c\/p\u003e\u003cp\u003eDesign by PhiRequiem on MakerWorld (license: CC0).\u003c\/p\u003e","brand":"Mymadmanlab","offers":[{"title":"Default Title","offer_id":67440712614192,"sku":null,"price":6.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0987\/0809\/5280\/files\/0.publish_ef70a79a-01a2-4e49-b38d-f5f288c6b494.jpg?v=1785769541","url":"https:\/\/mymadmanlab.com\/products\/coin-ping-test-holder","provider":"Mymadmanlab.com","version":"1.0","type":"link"}