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| Scott Catalogue Prefixes All listings are from the Standard Catalogue except those marked otherwise. (Countries in parenthesis are samples, not necessarily the only user. Those noted as Italy often appear in the colonies, etc.) This listing appears through the courtesy of Stuart Morrissey, Vice President and Publisher, Scott Publishing Company. |
| A thru Z- | Revenue Stamped Paper, Suffix |
| A- | Forerunner (India, stamps used abroad) |
| AR- | Postal-Fiscal |
| AX- | Forerunners (CSA-Postmasters’ Provisionals) |
| B | Semi-postal |
| BK- | Booklets (US, GB) |
| BKC- | Airmail booklets, US Specialized only |
| C | Airmail |
| CB- | Airmail Semipostal (Italy) |
| CBO- | Airmail Semi-postal official (Cyrenaica) |
| CE- | Airmail Special Delivery |
| CL- | Semi-official Airmail, US Specialized only |
| CM- | Military Airmail (US RF overprints), US Specialized only |
| CO- | Airmail Official |
| CP- | Commemorative Panel, Suffix |
| CQ- | Airmail Parcel Post (Haiti) |
| D- | Pneumatic (Italy) |
| E- | Special Delivery |
| E- | Essay, Suffix |
| EB- | Semi-postal Special Delivery (Italy) |
| EO- | Special Delivery Official |
| ER- | Delivery Tax (Spain) |
| EX- | Personal Delivery (Czechoslovakia) |
| EY- | Authorized Delivery (Italy) |
| F | Registration |
| FA- | Certified Mail, US Specialized only |
| G- | Insured Letter (Mexico) |
| GY- | Marine Insurance (Netherlands) |
| H- | Acknowledgment of Receipt |
| H- | Flat Plate Imperf Coil, also V, Suffix |
| I- | Late Fee (Panama, Denmark, etc.) |
| J- | Postage Due |
| JX- | Porte de Mar (Mexico) |
| JQ- | Parcel Post Postage Due (US) |
| K- | Offices (US, Poland, etc.) |
| KB- | Exile Government Semi-postal (Poland, etc.) |
| L- | Local |
| LB- | Local Semi-postal (Yugoslavia, Spain) see SUS |
| LB- | Local Carriers’, also in Standard Catalogue |
| LC- | Local Airmail (Spain) |
| LE- | Local Special Delivery (Yugoslavia, Spain) |
| LEB- | Local Semi-postal Special delivery (Spanish Morocco) |
| LF- | Department (local) Registration |
| LH- | Department Acknowledgment of Receipt |
| LJ- | Local Postage Due (Saudi Arabia, etc.) |
| LN- | Occupation Postage (Italy) |
| LNC- | Occupation Airmail (Italy) |
| LNE- | Occupation Special Delivery (Italy) |
| LO- | Local Official (Nicaragua) |
| LO- | Official Carriers’ (US) |
| LOX- | Typeset Post office Seals, US Specialized only |
| LP- | Local Newspaper (Yugoslavia) |
| LQ- | Local Parcel Post (PRC) |
| LU- | Local Envelope (US, Switzerland) |
| LUP- | Local Wrapper, US Specialized only |
| LX- | City Postage (Sweden, Colombia) |
| M- | Military |
| MB- | Military Semi-postal (Austria, etc.) |
| MC- | Military Airmail |
| MCE- | Military Airmail Special Delivery (Italy) |
| ME- | Military Special Delivery (Italy) |
| MH- | Machins (GB), see NIMH, SMH, WMMH |
| MP- | Military Newspaper (Austria) |
| MQ- | Military Parcel Post (Germany) |
| MR- | War Tax |
| N- | Occupation |
| NB- | Occupation Semi-postal |
| MC- | Occupation Airmail (Montenegro) |
| NCB- | Occupation Airmail Semi-postal (Montenegro) |
| NCE- | Occupation Airmail Special Delivery (Yugoslavia) |
| NE- | Occupation Special Delivery |
| MIMH- | Machins (GB-Northern Ireland) |
| NJ- | Occupation Postage Due |
| NL- | Occupation Rural Delivery (Poland) |
| NO- | Occupation Official |
| NP- | Occupation Newspaper |
| NRA- | Occupation Postal Tax (Romania, Greece) |
| NRAJ- | Occupation Postal Tax Due (Romania) |
| NU- | Occupation Envelopes, US Specialized only |
| NUX- | Occupation Postal Card, US Specialized only |
| NUZ- | Occupation Official Card, US Specialized only |
| O- | Official |
| OA- | Official Perfin Postage (Canada) Classic Catalogue, only |
| OAC- | Official Perfin Airmail (Canada) Classic Catalogue, only |
| OAE- | Official Perfin Special Delivery (Canada) Classic Catalogue, only |
| OB- | Official Perfin Postage (Australia) Classic Catalogue, only |
| OC- | Official Perfin Postage (Australia); Airmail (Canada) Classic Catalogue, only |
| OCC- | Official Perfin Airmail (Australia) Classic Catalogue, only |
| OCE- | Official Perfin Airmail Special Delivery (Canada) Classic Catalogue, only |
| OD- | Official Department (Argentina) |
| OE- | Official Perfin Special Delivery (Canada) Classic Catalogue, only |
| Ol- | Local Official (Germany) |
| OX- | Post Office Seal (Official Seal) (US, Canada, Newfoundland-Classic) |
| OY- | Life Insurance (New Zealand) |
| P- | Newspaper (Cuba, etc.) see PR |
| P- | Proof, Suffix |
| PN- | Postal Note, US Specialized only |
| PR- | Newspaper Tax (Hungary), Newspaper (US) |
| PS- | Postal Savings, US Specialized only |
| Q- | Parcel Post |
| QE- | Special Handling (US, Bosnia, Austria) |
| QI- | Postal Insurance, US Specialized only |
| QO- | Parcel Post Official (Guyana) |
| QY- | Parcel Post Authorized Delivery (Italy) |
| R- | Revenue (US) |
| RA- | Postal Tax |
| RAB- | Semi-postal Postal Tax (Brazil, Greece) |
| RAC- | Airmail Postal-tax (Dominican Republic, Haiti) |
| RAJ- | Postal Tax Due |
| RB- | Proprietary (US) |
| RC- | Future Delivery (US) |
| RD- | Stock Transfer (US) |
| RE- | Cordials, Wines, Etc., US Specialized only |
| REA- | Beer, US Specialized only |
| RF- | Playing Card, US Specialized only |
| RFV- | Playing Card-DWI, US Specialized only |
| RG- | Silver Tax, US Specialized only |
| RH- | Cigarette Tube, US Specialized only |
| RI- | Potato Tax, US Specialized only |
| RJ- | Tobacco Sale Tax, US Specialized only |
| RJA- | Narcotic Tax, US Specialized only |
| RK- | Consular Service Fee, US Specialized only |
| RL- | Customs Fee, US Specialized only |
| RM- | Embossed Stamped Paper, US Specialized only |
| RN- | Revenue Stamps Paper, US Specialized only |
| RO- | Private Die Match, US Specialized only |
| RP- | Private Die Canned Fruit, US Specialized only |
| RQ- | Unemployment Insurance (Ryukyu), US Specialized only |
| RS- | Private Die Medicine, US Specialized only |
| RT- | Private Die Perfumery, US Specialized only |
| RU- | Private Die Playing Card, US Specialized only |
| RV- | Motor Vehicle Use, US Specialized only |
| RVB- | Boating, US Specialized only |
| RVC- | Camping, US Specialized only |
| RVT- | Trailer Permit, US Specialized only |
| RW- | Hunting Permit (US) |
| RX- | Distilled Spirits, US Specialized only |
| RY- | Firearms Transfer, US Specialized only |
| RZ- | Rectification, US Specialized only |
| S- | Savings, US Specialized only |
| S- | Franchise |
| S- | Specimen, Suffix |
| SMH- | Machins (GB-Scotland) |
| T- | Telegraph, US Specialized only |
| TC- | Trial Color Proof, Suffix |
| TO- | Official Telegraph, US Specialized only |
| TS- | Treasury Savings, US Specialized only |
| U- | Envelopes (US etc., GB) |
| UC- | Airmail Envelope (US) |
| UCM- | Military Airmail Envelope (US RF overprints), US Specialized only |
| UE- | Special Delivery Envelope (Hawaii), US Specialized only |
| UF- | Registration Envelope (CZ), US Specialized only |
| UO- | Official Envelope (US) |
| UX- | Postal Card, US Specialized only |
| UXC- | Airmail Postal Card |
| UY- | Reply Postal Card |
| UZ- | Official Postal card, US Specialized only |
| V- | Flat Plate Imperf Coil, also H, Suffix |
| W- | Wrapper, US Specialized only |
| WMMH- | Machins (G-Wales & Monmouthshire) |
| WO- | Official Wrapper, US Specialized only |
| WS- | War Savings, US Specialized only |
| WX- | Christmas Seals, US Specialized only |
| X- | Postmaster’ Provisionals (Bermuda, US) |
| XI-XR- | Postmasters’ Provisional Revenue (Ryukyu), US Specialized only |
| XU- | Postmasters’ Provisional Envelope |
| Y- | Revolutionary Government Postage (Philippines), US Specialized only |
| YF- | Revolutionary Government Registration (Philippines), US Specialized only |
| YP- | Revolutionary Government Postage (Philippines), US Specialized only |
| Z- | Special Purpose (Japan) |