Perth Mint 1 Ounce Gold Bar in Black Assay Card (Gen 3)

Notable Differences

  1. The transparent "window" surrounding the bar is larger on the counterfeit assay card, measuring approximately 28.3 mm wide by 45.5 mm tall, where it measures approximately 25.8 mm wide by 42.9 mm tall on the genuine card.
  2. The swan and lettering in the logo on the front of the bar are slightly coarser on the counterfeit bar, but this is more noticeable in the scans than it is to the naked eye.
  3. The technical data is spaced too far apart on the counterfeit card.  The bottom of the serial number box is approximately 20 mm from the top edge of the genuine assay card, but approximately 24 mm from the top edge on the counterfeit card.
  4. The repeating kangaroo pattern on the back of the bar bleeds into the rim more on the counterfeit bar.

NOTE: These bars were scanned without the protective film that covers the assay cards when new.  Both the genuine and counterfeit bars are manufactured with a removable protective film.

Discussion & Detection

We refer to this as "third generation" counterfeit assay packaging.  It is an extremely close replica of the genuine Perth packaging, constructed in the same manner with the same or very similar materials as the genuine packaging.  The dimensions of the assay card are a match with only a slight difference in the thickness of the plastic, and a more noticeable difference in the thickness of the "bubble" containing the bar.  While some counterfeit assay cards are transparent when held against a bright light, this sample was completely opaque.

The incorrectly spaced technical specifications on the back of the counterfeit card is the easiest difference to spot, however that flaw could easily be corrected on future counterfeit cards.

The Precious Metal Verifier did identity this bar as fake using the main sensor on the 9999 gold setting, however in testing other counterfeit Perth gold bars, we have found examples that contain enough copper to mimic the electrical properties of gold, resulting in a reading on the PMV that would suggest a genuine bar.  The PMV PRO addresses this issue by measuring the thickness of the bar through the plastic packaging, and then providing a length and width footprint on the screen to check the dimensions of the bar, effectively verifying that the density matches the expected density of gold.


Additional Info

  • Brand: Perth Mint
  • Metal: Gold
  • Shape: Bar
  • Nominal Weight: 1 Troy Ounce
  • Genuine Weight (g): 40.54 (in assay card)
  • Counterfeit Weight (g): 38.48 (in assay card)
  • Genuine Width (mm): 54.40 (assay card)
  • Counterfeit Width (mm): 54.32 (assay card)
  • Genuine Length (mm): 85.91 (assay card)
  • Counterfeit Length (mm): 85.19 (assay card)
  • Genuine Thickness (mm): 1.73 (assay card flat), 4.70 (assay card bubble)
  • Counterfeit Thickness (mm): 1.27 (assay card flat), 5.31 (assay card bubble)
  • Genuine Edge Type: Smooth
  • Counterfeit Edge Type: Smooth
  • Genuine Material: 9999 Gold
  • Counterfeit Material: Gold Plated, Brass Core

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