

Dispatched within 24 hours
Designed and made in the UK. Every order is hand packed with care and sent directly via Royal Mail Tracked 48. Expect your pocket-sized verification tool to arrive safely in 1 to 2 business days.
Tested to 0.01mm
Find quick answers regarding coin compatibility, shipping timelines, and our non-destructive testing standards.
Which coins are supported?
We stand by our engineering. If the tool does not align perfectly with your genuine British gold sovereigns, return it within 30 days for a full refund.
This pocket-sized tool is calibrated exclusively for full British gold sovereigns minted from 1817 to the present day, matching official Royal Mint specifications.
Every single testing device undergoes manual calibration against physical steel blanks in our UK workshop before dispatch.
Will it scratch my gold?
No. The tough thermoplastic material is significantly softer than coin-grade gold, ensuring completely non-destructive testing that preserves the numismatic value.
Ask the developer
Have a technical question about tolerances, physical coin wear, or sovereign dimensions? Send a message directly to the workshop for swift, expert assistance from the developer.
Sovereign Tester Tool
Pocket-sized assurance for gold stackers.
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© 2026 Sovereign Tester Tool-Engineered for British gold sovereigns.
0.01MM TOLERANCE - NO BATTERIES
