| Superb |
Perfectly centered. |
| VF |
Very Fine (very well centered with almost equal margins; will please the most discriminating collector). |
| F-VF+ |
Fine to Very Fine Plus (middle range between VF and F-VF). |
| F-VF |
Fine to Very Fine (a middle range between Fine and VF with two opposite equal margins). |
| Fine+ |
Fine Plus (perforations well clear of the design; a middle range between F-VF and Fine). |
| Fine |
(perforations clear the design). |
| Ave |
Average (perforations touch or cut the design). |
| SD |
Slightly Damaged (a presentable copy, but may have a thin, crease, pulled perf, etc.). |
NH, UM,
  |
Never Hinged Original Gum, Unmounted, Postfrisk. |
Mint, MM
 |
Mint Hinged, Mounted Mint
Stamps are Mint with original gum, but are hinged. Generally this will also indicate that the stamps are Lightly Hinged (LH) unless otherwise mentioned. |
| LH |
Stamps are Mint Lightly Hinged with original gum. |
| OG |
Original Gum. |
NG
 |
No Gum. |
| RG |
Regummed. |
| pp |
Pulled perforation. |
Used
 |
In most general sense, means stamps are not mint, i.e. the stamps are canceled. Will generally mean stamps are postally used. |
Postally Used
  |
Stamps are genuinely Postally Used, thus are not canceled to order and not with first day cancels, etc. |
Canceled
 |
In most general sense, means stamps are not mint, i.e. the stamps are canceled. Specifically will mean that the stamps may be canceled to order, have first day cancels, or perhaps may be postally used but that cannot be determined positively. |
| fl, flr, fluor |
Fluorescent, sometimes also listed in catalogs as phosphorescent. Shows reaction under Ultraviolet (UV) light. The color of the reaction depends upon the chemicals used in or on the paper. For Scandinavian stamps, a LONG-WAVE UV light source is required. For stamps of other areas, including the U.S. a SHORT-WAVE UV light source is often required. See this article for more information. |
| nfl, nonfluor |
Non Fluorescent. No reaction under UV light. |
| yfl |
Yellow Fluorescent reaction under UV light. |
| wfl |
White Fluorescent reaction under UV light. |
| FDC |
First day cover. |
| Unaddressed |
In the context of First Day Covers: No address has been
written or typed onto the FDC, thus it could not have been mailed. In some
cases, an address may have been printed on the FDC at the same time
the cachet was printed (if it has a cachet); in those cases, the address is
considered to be part of the cachet and the FDC is not considered to be
addressed. |
| Addressed |
In the context of First Day Covers: An address has been
written, typed, or labeled onto the FDC, thus it may have been mailed. In some
cases, an address may have been printed on the FDC at the same time
the cachet was printed (if it has a cachet); in those cases, the address is
considered to be part of the cachet and the FDC is not considered to be
addressed. |
| Addressed Used |
In the context of First Day Covers: An address has been
written, typed, or labeled onto the FDC, and there is postal evidence,
such as postmarks or sorting machine marks, that the FDC actually passed
through the mail. |
| Registered |
In the context of First Day Covers: The FDC has been sent
through the mail via registered mail and thus usually bears a registered
mail label and usually bears postal markings on the reverse. Covers having
been sent in this manner often also have manuscript notations of delivery
attempts by postal workers; these are not considered to be defects on
registered mail FDCs. Of course the FDC must have been addressed to be
sent by registered mail. |
| Covers will show signs of wear normal for passage through the mails. |