Sizes, Weights & Markings

SILVER

Material Weight Fineness Width Length Thickness
Silver 5 g (grams) 999.0 14.00 mm 23.00 mm 1.70 mm
Silver 10 g (grams) 999.0 18.50 mm 31.50 mm 1.80 mm
Silver 1 oz (troy ounce) 999.0 28.50 mm 49.70 mm 2.30 mm
Silver 50 g (grams) 999.0 28.50 mm 49.70 mm 3.60 mm
Silver 100 g (grams) 999.0 28.50 mm 49.70 mm 7.20 mm

GOLD

Material Weight Fineness Width Length Thickness
Gold 1 g (gram) 999.9 8.70 mm 15.00 mm 0.50 mm
Gold 5 g (grams) 999.9 14.00 mm 23.00 mm 0.90 mm
Gold 10 g (grams) 999.9 18.50 mm 31.50 mm 1.00 mm
Gold  1 oz (troy ounce) 999.9 23.30 mm 40.40 mm 1.90 mm
Gold 50 g (grams) 999.9 28.50 mm 49.70 mm 2.00 mm
Gold 100 g (grams) 999.9 28.50 mm 49.70 mm 3.90 mm


The difference between a Troy Ounce and a (regular) Avoirdupois Ounce.

When buying precious metals is is important to know if the bars you are buying have been produced in Troy Ounces or (regular) Avoirdupois Ounces, to ensure that you are getting the best value for your money.

A Troy Ounce is a unit of measure used for weighing precious metals that that dates back to the Middle Ages and that, in general, has been retained by the Precious Metals/Bullion Industry.

Gold, Silver and other precious metals are commonly produced in Troy Ounces.

Goods such as Sugar are produced in (regular) Avoirdupois Ounces.

1 oz (regular ounce) = 28.35 g (grams), compared to 1 t oz (troy ounces) = 31.1 g (grams).

Reference.

1 (t oz) Troy ounce = 31.1035 grams (1 t oz = 1.09714 oz (avoirdupois) ounce).

1 Tola = 11.6638038 grams or 0.375 t oz.

1 Tael = 37.7994 grams or 1.20337 t oz.

1 Baht = 15.244 grams or 0.4901 t oz.

1 Chi = 3.75 grams or 0.1322774 t oz.


Central Bullion Investment Bullion Bars (that are not produced in grams) are produced in t oz (troy ounces).


*Markings on Bullion Bars

Bullion Bars have some, or all, of the following 6 markings:

  1. Stamp/Logo of the Refiner.
  2. Assay mark.
  3. Fineness.
  4. Serial number.
  5. Year and Month of manufacture (often included in the first digits of the Bar Serial Number).
  6. Minted Bars often have the a pattern on the bottom surface.

Central Bullion Investment Bullion Bars are produced with all Markings on each Bar as described in 1 to 6 above.


Categories of Investment Bars

There are 46 categories of standard and unusual shaped Bars used as Investment Bars around the world:

  1. London 400 oz bars. International.
  2. Block bars. Hong Kong.
  3. COMEX 100 oz bars. International.
  4. Square bars. International.
  5. Shanghai 3000 g bars. China.
  6. Round bars. International.
  7. Kilobars. International.
  8. Oval bars. Thailand.
  9. Smaller bars: gram. International.
  10. Twin-coin bars. Thailand.
  11. Small bars: troy ounce. International.
  12. Yin-Yang bars. Japan.
  13. Tola bars. Middle East & India.
  14. Bone bars. Brazil.
  15. Tael bars. Hong Kong.
  16. Tezabi bars. Pakistan.
  17. Baht bars. Thailand.
  18. Honeycomb bars. Thailand.
  19. Bars: issued by banks. International.
  20. Compressed cast bars. China.
  21. Bas-relief bars. Thailand.
  22. Coiled “money ring” bars. India.
  23. Doughnut bars. Hong Kong & Thailand.
  24. Plate bars. International.
  25. Boat bars. Hong Kong, Thailand & China.
  26. Unmarked refined bars. International.
  27. Minted bars: gram. International.
  28. Decorative bars. International.
  29. Minted bars: troy ounce. International.
  30. Hologram bars. International.
  31. Minted bars: tola Middle East & India.
  32. Kinebars® Switzerland.
  33. Minted bars: tael. Hong Kong.
  34. Full colour bars. Switzerland.
  35. Minted bars: baht. Thailand.
  36. Commemorative bars. International.
  37. Minted bars: chi. Vietnam.
  38. Heart bars. International.
  39. Minted bars: round. International.
  40. Pendant bars. International.
  41. Minted bars: oval. International.
  42. Double-pendant bars. Switzerland.
  43. Minted bars: issued by banks International.
  44. Koban bars. Japan.
  45. Minted bars: issued by mints International.
  46. Gold leaf bars. Vietnam.

Central Bullion Investment Bullion Bars are produced with in Category types as described in 27 and 29 above.