Large Coin Tester Kit


Large Coin Tester Kit

See Tungsten inside Gold and Silver



Key Features:

  • Large enough to scan Silver Eagles
  • Locates and illuminates tungsten inside of gold and silver unclad coins
  • Simple and fool-proof to operate
  • Light weight and portable
  • Patented sensitive magnetic susceptibility lens detects disturbances in the magnetic force
  • Does not require batteries


The Large Gold Lock Coin Tester (Patent #9,934,639) is a low-cost portable tungsten illuminator that is small enough to fit in a pocket and does not require batteries.  This test apparatus is designed to detect tungsten inside gold and silver objects.  Tungsten (19.25 grams/cc) is nearly the same density/weight of gold (19.3 grams/cc) and is the ideal material for counterfeiting gold and silver objects due to its relatively low cost ($4/ounce) and nearly identical density/weight.

Does not work on clad coins, bullion or bars.  Recommended for investors that deal with significant quantities of unclad coins.



  • 30 Day Warranty
  • 1 – Hollow Coin with Opener and Test Samples
  • Water/Dust/Shock Proof Pelican Case to Protect your Tester
  • 1 – Magnetic Activator
  • 1 – Carrying Pouch


How to use

Place the coin inside the Tester.  Move the magnetic activator in small circles close to the Tester.  Magnetic anomalies will be illuminated by a visible distortion in the green aurora of the Tester lens; this indicates a foreign body in the gold or silver.

Download Detailed Instructions


  • Tester Cleaning Kit
  • An Extra Magnetic Activator