No visual checklist can guarantee that a stamp is genuine from a web photo. Perforations, paper, fluorescence, a barcode or a platform badge may support examination, but none is item-level proof. Start with the seller and source, then compare the exact issue and use official reporting when needed.
Risk signals before purchase
- A large discount from current valid postage value
- A site that imitates USPS branding or suggests official affiliation
- No identifiable seller, address or return process
- Stock photos instead of the actual item and packaging
- Pressure tactics, unusual payment methods or inconsistent pack descriptions
Verification sequence
- Prefer USPS or a verifiable Approved Postal Provider.
- Identify the actual seller and fulfillment party.
- Compare the exact issue name, denomination, format and design count with USPS records.
- Inspect the delivered item and packaging without treating one feature as conclusive.
- If suspicion remains, stop using the postage and preserve the order, payment, packaging and seller records.
- Report suspected counterfeit postage through the U. S. Postal Inspection Service.
What does not prove authenticity
| Signal | Why it is insufficient |
|---|---|
| Low or high price | Price is a risk clue, not physical authentication |
| Barcode or QR code | May belong to packaging, pane margin or another workflow |
| Seller reviews | Reviews do not establish the origin of one item |
| Mail was accepted once | Temporary acceptance is not authentication |
| Looks like an official image | Images and packaging can be copied |
Related guides
Sources
What physical inspection can and cannot prove
Compare the item with an exact official issue record: denomination or service wording, design, format, die cuts or perforations, tagging where documented and pane or booklet details. Examine printing, paper, gum and damage under good light, but no photograph, touch test, UV check or single visual feature can guarantee authenticity across every issue. Preserve the envelope, packaging, seller record and payment evidence, stop using suspicious postage, and report suspected counterfeit postage through USPIS.