Buying with confidence

Our Quality and Grading Standards

We grade and describe every stamp to the standard terminology used by Stanley Gibbons, and we photograph every stamp in high resolution, front and back, so you can judge its condition for yourself. Every fault, repair or regumming is disclosed, a forgery is never knowingly sold as genuine, and for high-value stamps we obtain or rely on a certificate from a recognised expert. If a stamp ever reaches you and is not as described, you can return it.

SG grading
Front and back images
Faults always disclosed
Great Britain · Graded to SG
Described, not flattered

At a glance

GradingTo Stanley Gibbons' standard terminology
ImagesHigh-resolution, front and back, on every stamp
CentringShown in the images for you to judge, not graded subjectively
Faults and repairsAlways disclosed
AuthenticityForgeries never knowingly sold as genuine
CertificatesObtained for high-value stamps where appropriate
If not as describedReturn it

How we grade condition

We follow the grading definitions used by Stanley Gibbons, the standard reference for British philately, so the terms on our listings mean exactly what an experienced collector expects them to mean.

TermWhat it means
Unmounted Mint (UM) / Mint Never Hinged (MNH)Full original gum, never hinged or mounted. The gum is as issued.
Mint Very Lightly Hinged (MVLH)Original gum with only the faintest trace of a hinge, barely perceptible.
Mint Lightly Hinged (MLH)Original gum with a light but clearly visible hinge mark.
Mint Hinged (MH) / Mounted MintOriginal gum with a more pronounced hinge mark.
Mint No Gum (MNG) / UnusedA mint stamp without gum, whether never present or since removed.
UsedA stamp that has been postally used and cancelled.
Fine Used (FU)Used, with a light, neat cancellation and good overall appearance.
Very Fine Used (VFU)Used, in superior condition with an especially clean, well-placed cancel.
Cancelled to Order (CTO)Cancelled in bulk by the postal authority rather than through the post, often with full gum.
Why we show front and back, rather than grade centring

Our approach

Why we show front and back, rather than grade centring

You will notice that we do not assign a centring or quality grade, such as "fine" or "superb", to most stamps. This is deliberate.

A centring grade is a matter of opinion, and one collector's "fine" is another's "very fine". Rather than ask you to take our word for it, we photograph every stamp in high resolution, front and back, so you can see exactly what you are buying and judge its centring and appearance for yourself. The only time we add a comment on quality is to point out something the images cannot show you, such as a hidden thin, a repair, or a fault visible only on close examination.

In other words, we describe what you cannot see, and let you see everything else. It is the surest way we know to make certain a stamp is never misdescribed.

What every listing tells you

Every listing carries the information you need to identify a stamp precisely and value it accurately.

  • Catalogue references: the Stanley Gibbons (SG) number, with Scott, Michel and Yvert numbers where they apply
  • The condition, graded to the terms above
  • The catalogue value, issue date and denomination
  • Any plate, variety or postmark detail that matters
  • High-resolution images of both the front and the back

Collectors in different countries rely on different catalogues, Stanley Gibbons in Britain, Scott in the United States, Michel across much of Europe and Yvert et Tellier in France, so we give the reference for each where it applies. It means that whichever catalogue you collect by, you can find the stamp.

Authenticity, faults and certificates

Honest description is not optional for us. It is required by the codes of the PTS and the IPDA, and it is simply how we believe stamps should be sold.

Every fault, repair or instance of regumming is disclosed, without exception. A forgery is never knowingly sold as genuine. And for high-value stamps, we obtain or rely on a certificate from a recognised expert where appropriate, so that you can buy with certainty rather than hope.

If a stamp is not as described

If, despite all of this, a stamp ever reaches you and is not as described, you can return it. That promise is the point of the standards, not an afterthought to them, and you will find the detail on our returns page.

Frequently asked questions

We grade to Stanley Gibbons' standard terminology and photograph every stamp front and back in high resolution, so you can judge its condition yourself. We disclose every fault and never knowingly sell a forgery as genuine.

From the shop

See the standards in practice

Every listing is described and imaged to the standards above. Browse a selection from our Great Britain stock and see for yourself.

View all Great Britain →

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Great Britain stampsContact us

Daniel Ardley, founder of Blackheath Stamps.By Daniel ArdleyFounder and stamp dealerLast updated June 2026