What do people think of the Sigma precious metals verifiers? Worth buying and how accurate? Any surprises with tungsten filled gold bars? there appear to be many fake pamp and perth mint gold bars when you scan facebook and see them being sold way below spot.
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Sigma Metalytics Precious Metals Verifier
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The Precious Metal Verifier measures the bulk metal in a bullion bar or coin and ensures that the metal matches the expected electrical
Sigma Metalytics Precious Metal Verifier - Original Bullion Set
Precious Metal Verifier