An assay certificate documents a bar’s authenticity, weight, and fineness, and it often includes a matching serial number. Having the correct paperwork can shorten due diligence, protect value, and improve buyer confidence. Missing or mismatched documentation may require extra testing and can slow, or even complicate, a sale.

Key certificate checks:

• Matching serial number – Certificate and bar numbers should align exactly.
• Purity and weight details – Stated fineness and mass must match physical tests.
• Security features – Holograms, microprinting, or special stock deter tampering.
• Issuer verification – Confirm the cert originated from the producing refinery.
• Condition of documents – Undamaged, legible paperwork supports smoother resale.

A gold bar dealer Cambridge will typically validate all certificate data against the bar itself, which helps finalize pricing without unnecessary delays or re-tests.

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