United States (1001-1068)
*
Hawaii (1069-1069)
*
Ryukyu Islands (1070-1070)
Great Britain (1071-1072)
British Commonwealth (A-G) (1073-1129)
Hong Kong (1130-1144)
*
British Post Offices in China (1145-1146)
British Commonwealth (I-Z) (1147-1211)
Alaouites (1212-1214)
Albania (1215-1223)
Algeria (1224-1224)
Argentina (1225-1225)
Armenia (1226-1229)
Austria (1230-1235)
*
Austrian Zeppelin Flights (1236-1243)
*
Austrian Military stamps (1244-1244)
Azerbaijan (1245-1249)
Belgian Congo (1250-1250)
Belgium (1251-1253)
Bosnia and Herzegovina (1254-1257)
Brazil (1258-1260)
Bulgaria (1261-1266)
*
Eastern Rumelia (1267-1267)
Cambodia (1268-1268)
China (1269-1276)
Republic of China (1277-1280)
People's Republic of China (1281-1328)
Colombia (1329-1330)
Crete - Russian Administration (1331-1337)
Cuba (1338-1338)
Czechoslovakia (1339-1341)
*
Legion Post in Siberia (1342-1346)
Ecuador (1347-1353)
Egypt (1354-1355)
Estonia (1356-1364)
Finland (1365-1379)
Finnish Zeppelin Flights (1380-1389)
France (1390-1397)
French Colonies (1398-1398)
*
St. Pierre and Miquelon (1399-1405)
*
French Southern and Antarctic Territories (1406-1407)
Georgia (1408-1410)
Germany (1411-1511)
*
German Occupation Issues (1512-1575)
Greece (1576-1585)
Greenland (1586-1590)
Iceland (1591-1592)
Iran (1593-1593)
Italy (1594-1607)
Italian Colonies (1608-1621)
Japan (1622-1627)
Karelia (1628-1629)
Republic of Korea (1630-1639)
North Korea (1640-1640)
Laos (1641-1641)
Latvia (1642-1652)
Liberia (1653-1662)
Liechtenstein (1663-1671)
Lithuania (1672-1681)
Luxembourg (1682-1682)
Mexico (1683-1683)
Mongolia (1684-1685)
Morocco (1686-1686)
Nepal (1687-1690)
Netherlands Colonies (1691-1692)
Nicaragua (1693-1693)
North Ingermanland (1694-1695)
Norway (1696-1697)
Poland (1698-1711)
Portugal (1712-1712)
Portuguese Colonies (1713-1713)
*
Macao (1714-1716)
*
Mozambique (1717-1717)
*
Nyassa (1718-1727)
Romania (1728-1728)
Russia (1729-1794)
RSFSR Issues 1918-23 (1795-1830)
Soviet Union Stamps 1924-41 (1831-1944)
Soviet Union Stamps 1941-91 (1945-2053)
Russian Semi-Postal Issues (2054-2067)
Russian Air Post Stamps and Covers (2068-2107)
Russian Postage Due Stamps (2108-2110)
Russian Official Stamps (2111-2113)
Wenden (2114-2115)
Russian Offices in China (2116-2118)
Russian Offices in the Turkish Empire (2119-2130)
Russian Locals of Civil War period (2131-2131)
*
Far Eastern Republic (2132-2139)
*
Siberia (2140-2154)
*
South Russia (2155-2169)
Zemstvo (Rural Post) Locals (A-L) (2170-2302)
Zemstvo (Rural Post) Locals (2303-2431)
SAAR (2432-2434)
San Marino (2435-2441)
Serbia (2442-2442)
Spanish Morocco (2443-2443)
Sweden (2444-2444)
Switzerland (2445-2445)
Tannu Tuva (2446-2455)
Thailand (2456-2456)
Turkey (2457-2458)
Ukraine (2459-2459)
*
Ukrainian Trident Overprints (2460-2467)
*
Vienna Issue (2468-2468)
*
Western Ukraine (2469-2473)
*
Carpatho - Ukraine (2474-2480)
Vatican City (2481-2483)
North Vietnam (2484-2488)
Worldwide Semi-Official Stamps, Charity and Cinderella Labels (2489-2490)
Yugoslavia (2491-2492)
Trieste (Zone B) (2493-2502)