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Metric System
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Metric System
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Below is a checklist of metric system (International System of Units (SI)) postal items (stamps, souvenir sheets, aerogrammes, postal cards, etc.). Catalog numbers, years of issue, and notes on the items featured are given when available. If readers know of additional information or images, please contact the author using the e-mail address at the bottom of this page.
| Country | Catalog Number* | Type of Item** | Year of Issue | Notes on Content |
|---|---|---|---|---|
| Australia | 541 | 1973 | conversion to metric system: (kg/stones-and-pounds) mass, scale | |
| Australia | 542 | 1973 | conversion to metric system: (°C/°F) temperature, fever | |
| Australia | 543 | 1973 | conversion to metric system: (cm/feet-and-inches) length, tape measure | |
| Australia | 544 | 1973 | conversion to metric system: (mL/fluid-ounces) volume, drinking glass | |
| Australia | 541-544 fdc1 | Four stamps and cachet on FDC | 1973 | conversion to metric system |
| Australia | 541-544 fdc2 | Four stamps and cachet (different) on FDC | ||
| Bangladesh | 212 | 1983 | metric system: mail scale | |
| Bangladesh | 213 | 1983 | metric system: weights, measures | |
| Brazil | 940 | 1962 | 100th anniv. introduction of metric system, 1862: millimeter gauge | |
| Bulgaria | 2236 | 1975 | 100th anniv. International Metre Convention, 1875: standard kilogram, meter | |
| Cuba | 2173 | 1977 | SI-metric system: 7 (seven) SI base units, map | |
| Denmark | 1388 | 2007 | 100th anniv. metric system in Denmark | |
| Finland | 750 | 1987 | 100th anniv. use metric system, 1887: X-cross section | |
| Finland | 750 fdc | Stamp and cachet on FDC | ||
| France | 732 | 1954 | metric system introduction in France first: allegory | |
| France | 1435 | 1975 | 100th anniv. International Metre Convention, 1875: document, krypton atom, waves | |
| France | 1435 fdc | Stamp and cancel and cachet on FDC | ||
| Ghana | 570 | 1976 | introduction of metric system, 1975-09: liter, water | |
| Ghana | 571 | 1976 | introduction of metric system, 1975-09: kilogram, jam | |
| Ghana | 572 | 1976 | introduction of metric system, 1975-09: meter, cloth | |
| Ghana | 573 | 1976 | introduction of metric system, 1975-09: (°C) fever thermometer, ice, boiling tea kettle | |
| Guyana | 437a | From MS6 (437 (a-f)) | 1982 | conversion to metric system, 1982-01-02: tape measure, truck |
| Guyana | 437b | conversion to metric system, 1982-01-02: juggler, unit symbols (°C) | ||
| Guyana | 437c | conversion to metric system, 1982-01-02: man, envelope | ||
| Guyana | 437d | conversion to metric system, 1982-01-02: woman, baby, scale | ||
| Guyana | 437e | conversion to metric system, 1982-01-02: Canje bridge (530 m long) | ||
| Guyana | 437f | conversion to metric system, 1982-01-02: liter bucket | ||
| Guyana | 557a | From MS6 (557 (a-f)), 437 (a-f) overprinted | 1982 | conversion to metric system, 1982-01-02: tape measure, truck |
| Guyana | 557b | conversion to metric system, 1982-01-02: juggler, unit symbols (°C) | ||
| Guyana | 557c | conversion to metric system, 1982-01-02: man, envelope | ||
| Guyana | 557d | conversion to metric system, 1982-01-02: woman, baby, scale | ||
| Guyana | 557e | conversion to metric system, 1982-01-02: Canje bridge (530 m long) | ||
| Guyana | 557f | conversion to metric system, 1982-01-02: liter bucket | ||
| Hungary | 2418 | 1976 | 100th anniv. introduction of metric system, 1876: standard meter, meter act | |
| Hungary | 2419 | 1976 | 100th anniv. introduction of metric system, 1876: standard kilogram | |
| Hungary | 2420 | 1976 | 100th anniv. introduction of metric system, 1876: interferometer, rocket | |
| Indonesia | 941 | 1975 | 100th anniv. International Metre Convention, 1875: standard meter, kilogram, globe | |
| Italy | 1809 | 1990 | 55th anniv. metric system in Italy, 1935: MKS, Giovanni Giorgi | |
| Japan | 673 | 1959 | adoption of metric system: measuring glass, tape measure, scales | |
| Japan | 673 fdc1 | Stamp and cancel and cachet on FDC | ||
| Japan | 673 fdc2 | Stamp and cancel and cachet (different) on FDC (post card) | ||
| Japan | 673 fdc3 | Stamp and cancel and cachet (different) on FDC | ||
| Japan | 673 fdc4 | Stamp and cancel and cachet (different) on FDC | ||
| Japan | 673 fdc5 | Stamp and cancel and cachet (different) on FDC | ||
| Japan | 673 fdc6 | Stamp and cancel and cachet (different) on FDC | ||
| Japan | 673 insert | Insert from FDC | ||
| Kenya, Uganda, and Tanzania | 225 | 1971 | conversion to metric system: kilogram/pounds, pan balance | |
| Kenya, Uganda, and Tanzania | 226 | 1971 | conversion to metric system: two (°C/°F) thermometer | |
| Kenya, Uganda, and Tanzania | 227 | 1971 | conversion to metric system: liters, petrol | |
| Kenya, Uganda, and Tanzania | 228 | 1971 | conversion to metric system: kilometers, surveyors | |
| Kenya, Uganda, and Tanzania | 225-228 fdc1 | Four stamps and cachet on FDC | 1971 | conversion to metric system |
| Kenya, Uganda, and Tanzania | 225-228 fdc2 | Four stamps and cachet on FDC (different cancel) | ||
| Korea (South) | 428 | 1964 | introduction of metric system: metric symbols ("kg" incorrectly given as "Kg") | |
| Korea (South) | 975 | 1975 | 100th anniv. International Metre Convention, 1875: metric symbols | |
| Mexico | C241 | 1957 | 100th anniv. adoption of metric system, 1857: measures, globe | |
| Netherlands | 531 | 1975 | 100th anniv. International Metre Convention, 1875: symbolic scale | |
| New Zealand | 594 | 1976 | metric conversion, 1976: symbolic measures: weight, length, temperature, (unscaled) thermometer | |
| Nigeria | 394 | 1980 | World Standards Day: kilogram scale, centimeter ruler, emblem | |
| Norway | 655 | 1975 | 100th anniv. International Metre Convention, 1875: Ole Jacob Broch | |
| Pakistan | 364 | 1974 | introduction of metric system: metric measures | |
| Poland | None | Postal card | 1979 | 60th anniv. Measurement Service, 1919: standards, SI units |
| Romania | 1873 | 1966 | 100th anniv. introduction of metric system, 1866: derivation of meter | |
| Romania | 1874 | 1966 | 100th anniv. introduction of metric system, 1866: metric symbols | |
| Romania | 2547 | 1975 | 100th anniv. International Metre Convention, 1875: emblem | |
| Russia (USSR) | 4304 | 1975 | 100th anniv. International Metre Convention, 1875: metric symbols | |
| Singapore | 316 | 1979 | introduction of metric system: distance, kilometer | |
| Singapore | 317 | 1979 | introduction of metric system: tape measure, centimeter | |
| Singapore | 318 | 1979 | introduction of metric system: scale, kilogram | |
| Singapore | 316-318 fdc | Three stamps and cachet on FDC | 1979 | introduction of metric system |
| South Africa | 497 | 1977 | introduction of metric system: world map, "M": 10th anniv. Metric Advisory Board, 1967 | |
| South Africa | 497 fdc | Stamp and cancel and cachet on FDC | ||
| Surinam | 421 | 1975 | 100th anniv. International Metre Convention, 1875: symbolic design | |
| Surinam | 422 | 1975 | 100th anniv. International Metre Convention, 1875: symbolic design | |
| Surinam | 423 | 1975 | 100th anniv. International Metre Convention, 1875: symbolic design | |
| Sweden | 1121 | 1975 | 100th anniv. International Metre Convention, 1875: tape measure | |
| Sweden | 1121-1123 fdc1 | One of three stamps and cachet on FDC | ||
| Sweden | 1121-1123 fdc2 | One of three stamps on FDC (different) | ||
| Sweden | 1121-1123 insert | FDC insert | ||
| Switzerland | 599 | 1975 | 100th anniv. International Metre Convention, 1875: standard meter, krypton spectrum | |
| Tonga | 449 | 1975 | introduction of metric system: decade of progress | |
| Yugoslavia | 1180 | 1974 | 100th anniv. introduction of metric system, 1874: measure |
*Scott catalog number.
**FDC = First Day Cover; SS# = souvenir sheet, MS# = miniature sheet, where # = number of stamps in sheet, and the numbers in parentheses are the catalog numbers of the stamps in the sheet.
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