Many gold and silver products are sold in sealed cards, blisters or pouches described as tamper-evident packaging. Product listings may shorten this to TEP.
The packaging can protect a bullion product, preserve its presentation and provide visible evidence if the seal has been disturbed. It is useful, but it is important to understand what tamper-evident packaging can show and what it cannot prove on its own.
What Does Tamper-Evident Packaging Mean?
Tamper-evident packaging is designed so that opening or interfering with it should leave a visible sign. Depending on the manufacturer, this may include a broken seal, separated layers, damage around a blister or a word or pattern that appears when the package is opened.
The Perth Mint provides a clear example. Its minted bars are supplied in card-mounted blister packaging that displays the word “VOID” around the edge if the blister has been prized open. The manufacturer explains this feature in its guide to checking coins and bars.
Not every package uses the same system. The materials, security indicators and method of sealing vary between mints, refiners and product ranges.
What Is the Purpose of TEP?
Tamper-evident packaging can serve several purposes:
- Protecting a bar, coin or round from handling marks
- Helping preserve the original presentation
- Making unauthorised opening easier to notice
- Displaying product details such as weight and purity
- Carrying a serial number or assay information where supplied
- Keeping small bullion products secure and easy to identify
For limited-edition and collectable releases, the card or presentation can form an important part of the complete product. Condition therefore applies to both the precious-metal item and its packaging.
Is TEP the Same as an Assay Card?
The terms are related but are not exact synonyms.
An assay card normally displays information about the enclosed product, which may include the manufacturer, metal, weight, purity, individual serial number and an assayer’s certification. Tamper-evident packaging describes the security or construction of the package itself.
A product can combine both features. PAMP Suisse states that its minted Lady Fortuna bars are individually registered and sealed in protective CertiPAMP packaging with an integrated assay certificate. Its official product information explains that the packaging confirms the stated fine-metal content and weight.
Other products may be sealed in tamper-evident packaging without an individual assay certificate. Always check the specific listing rather than assuming that every sealed product includes the same information.
What Information Might Appear on the Packaging?
Depending on the manufacturer and release, packaging may show:
- Product name
- Metal type
- Gross or fine metal weight
- Stated purity
- Manufacturer or issuing mint
- Individual serial number
- Assayer’s mark or signature
- Mintage information
- Barcode, QR code or product reference
Some bars have a serial number stamped on the metal that matches the number printed on the assay card. PAMP states that its one-ounce Suisse minted bar uses this arrangement. This is a useful consistency check, but serial-number systems are manufacturer-specific and should not be expected on every bullion product.
Does Sealed Packaging Prove a Product Is Genuine?
No. Intact packaging is useful supporting evidence, but it is not a complete authentication method.
A professional assessment considers the whole product. This may include the packaging, printing, spelling, colours, serial number, design, weight, dimensions, security features and expected metal properties.
Packaging can also be copied, altered or paired with the wrong item. Buyers should therefore avoid treating a sealed card as an automatic guarantee without considering the seller and the product itself.
Our guide to spotting fake gold and silver explains the wider checks used when assessing precious-metal products.
What Should You Check on a Sealed Product?
When examining a bar, coin or round in TEP, look for:
- Splits, cuts or lifted edges
- Clouding, glue marks or uneven resealing
- VOID markings or another activated security pattern
- Damage around the blister
- Printing that appears blurred, misaligned or inconsistent
- A serial number that does not match the enclosed product where matching numbers are expected
- A product sitting incorrectly inside the holder
- Missing labels, certificates or other components stated in the listing
Normal scratches to a removable outer film are not necessarily damage to the assay card beneath it. PAMP, for example, states that its CertiPAMP packaging can include a thin removable protective film. Check which layer is marked before assuming the sealed card itself is damaged.
Does Damaged Packaging Mean the Bullion Is Fake?
Not necessarily. Packaging can split, scratch, bend or separate through handling, storage, age or transit. A genuine product may therefore be supplied with damaged or previously opened packaging.
The damage still matters because it can affect presentation and collector appeal. It may also mean that the original tamper-evident function is no longer intact, so the product should be assessed on its own merits rather than relying on the seal.
For a pre-owned item, read the condition description carefully and check whether the photographs show the actual product. If original packaging is important to you, confirm exactly what is included and whether any damage has been disclosed.
Should You Open Tamper-Evident Packaging?
Opening TEP normally activates or destroys the tamper indicator. Once opened, the package may no longer provide the same security evidence or presentation, and it might not be possible to restore it without obvious damage.
There may be legitimate reasons to remove an item, including further examination or testing that cannot be completed through the package. However, a buyer should understand the likely effect on presentation before opening a sealed or collectable product.
Do not open packaging merely to handle the metal if the item can be inspected appropriately while sealed. If the package is already damaged or the product requires additional verification, the testing approach should be chosen for that particular item.
Can Bullion Be Tested Through Packaging?
Some testing equipment can assess suitable products through non-metallic packaging. Sigma Metalytics states that its Precious Metal Verifiers can test through many plastic cases, holders, flips and assay cards, provided the packaging does not contain metal.
This can be valuable for sealed bullion because the product may be checked without deliberately opening its original presentation. The manufacturer notes that some cases are more difficult than others, so the suitability of a reading still depends on the product and package.
XRF uses a different method and requires an appropriate path to the surface being analysed. Packaging can affect how or whether a valid XRF reading should be taken. Our detailed article on how XRF testing works explains why different instruments and physical checks can complement one another.
TEP, Capsules and Presentation Boxes
Tamper-evident packaging is different from an ordinary coin capsule or presentation box.
A capsule mainly protects the surface from handling and environmental contact. Unless it includes a security seal, it may be opened and closed without leaving clear evidence. A presentation box improves storage and display but does not normally authenticate the product inside it.
Some collectable products combine several layers, such as a capsule inside a card, a sealed TEP sleeve and an outer box. Check the listing to understand which components form part of the complete product.
Buying Gold and Silver in TEP
Before purchasing, consider:
- Whether the photographs show the exact item or a representative example
- Whether the package is factory sealed
- Whether any card, blister or outer film damage is disclosed
- Which product details and security features should be present
- Whether an assay certificate or serial number is normally supplied
- How the seller verifies the precious metal as well as the packaging
These points are particularly useful for secondary-market bars and collectable silver rounds, where the packaging may contribute to the price as well as protecting the metal.
How 156Bullion Checks Packaged Products
Every qualifying precious-metal product sold by 156Bullion is professionally authenticated before dispatch using our Niton Thermo Fisher XRF analyser and Sigma Metalytics Precious Metal Verifier Pro.
The method used depends on the item, its construction and its packaging. Presentation, markings and product specifications are considered alongside instrument readings rather than treating a sealed card as proof by itself.
This allows original packaging to be preserved where an appropriate non-destructive assessment can be completed, while recognising when additional checks may be required.
In Summary
Tamper-evident packaging is designed to show visible evidence if a package has been opened or interfered with. It can protect a bullion product, display important specifications and help preserve its original presentation.
It does not independently prove authenticity. The condition and consistency of the packaging should be considered alongside the metal product, seller, manufacturer specifications and professional testing.
Browse the current gold and silver collections to see the packaged bars, coins and rounds presently available from 156Bullion.