100 oz bars – These bars weigh 6.8 pounds (3.11 kg) and are among the most popular with retail investors. Popular brands are Engelhard and Johnson Matthey. Those brands cost a bit more, usually about 40-80 cents per ounce above the spot price, but that price may vary with market conditions.
Silver bars of this or larger sizes do offer an important investment advantage: they carry a low premium over spot silver. 100 ounce silver bars are an industrial product intended foremost as a storage means, and recognized around the world as a trading medium. They are therefore very liquid.
The 100-oz Engelhard silver bars are an excellent way silver bullion investment and the reason for this is their low premium over spot, compared with silver bullion coins.
A traditional way of investing in silver is by buying actual bullion bars. In some countries, like Switzerland and Liechtenstein, bullion bars can be bought or sold over the counter at major banks.
The flat, rectangular shape of silver bars makes them ideal for storage in a home safe, a safe deposit box at a bank, or placed in allocated (also known as non-fungible) or unallocated (fungible or pooled) storage with a bank or dealer. Silver is traded in the spot market with the code "XAG". When settled in United States Dollars, the code is "XAGUSD".
Various sizes of silver bars:
1000 oz troy bars – These bars, 999 fine, weigh about 68.6 pounds avoirdupois (31 kg) and vary about 10% as to weight, as bars range from 900 ozt to about 1,100 ozt (28 to 34 kg). These are COMEX and LBMA good delivery bars.
100 oz troy bars – These bars weigh 6.86 pounds (3.11 kg).
Odd weight retail bars – These bars cost less and generally have a wider spread, due to the extra work it takes to calculate their value and the extra risk due to the lack of a good brand name.
1 kilogram bars (32.15 oz troy)
10 oz troy bars (311 g) and 1 oz troy bars (31.1 g)