Heraeus Gold Bars
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50g Heraeus minted gold bar.
Purity: 999.9 fine. Actual size - 49.7 x 28.45 x 2mm
Heraeus Gold Bars are manufactured by Heraeus Precious Metals GmbH & Co KG, a German company with subsidiaries and affiliated companies around the world - including Heraeus Incorporated (USA) and Argor-Heraeus SA (Switzerland).  Heraeus Precious Metals GmbH & Co KG is wholly owned by Heraeus Holding GMBH, which is the biggest privately owned refiner of precious metals and is based near Frankfurt. 
Heraeus is a well known, long established and prestigious manufacturer of precious metal bullion. Heraeus refines gold doré bars and scrap gold and purifies them to 99.99% purity / 999.9. The company also accepts gold in other forms such as "electrolytic slimes". In addition to manufacturing gold bars, Heraeus also makes platinum, silver and palladium bars. It does not sell its bullion bars directly to private investors but makes them available through banks and bullion dealers. 
Heraeus makes three different gold bar types - pressed (minted) bars, cast (poured) bars and kinebars. 
A kinebar is a type of (pressed) gold bar that contains a Kinegram. A Kinegram (trademark of OVD Kinegram Corp., Switzerland) is a special diffractive pattern which has been embossed into the surface of the gold bar. It creates a rainbow effect and acts as both a security device and a visually-appealing design feature. A kinegram is different from a hologram in that a hologram generates a three-dimensional image whereas a kinegram does not. Kinegrams may also be seen on some UBS gold bars and possibly others.
The Heraeus company was originally founded by chemist Wilhelm Carl Heraeus in Chiasso, Switzerland in 1851 as Argor SA. In the 19th century, the company received platinum group metals from Russia.  In 1856, Heraeus constructed the world's first platinum foundry and became the first person to melt platinum on a large scale.  Heraeus was accredited withthe London Bullion Market Association (LBMA) in 1958, CME Group in 1974 and Tokyo Commodity Exchange in 1982. The company has manufactured good delivery bars since 1962. 
In 1994 the kinebar was introduced to the Heraeus range of bars.
As of 2010, Heraeus had over 12,900 employees within its umbrella of over 120 affiliated companies or subsidiaries. 
The Heraeus company has trading locations in Germany, New York, Hong Kong and Shanghai and provides investor services. In addition to making gold bullion bars, the company provides precious metals to industries such as automotive, chemicals, glassmaking, parmaceuticals, jewelry and electronics. Heraeus also supplies Rhodium, Iridium, Ruthenium and Osmium in both sponge and powder forms.
Heraeus Gold Bar Sizes
Heraeus makes pressed gold bars in the following sizes:
1 gram (15 x 8.7 x 0.50 mm)
5 grams (23 x 14 x 1 mm)
10 grams (31.5 x 18.5 x 1.1) mm
20 grams (40.4 x 23.3 x 1.3) mm
1 troy ounce (40.4 x 23.3 x 1.8) mm
50 grams (49.7 x 28.45 x 2) mm
100 grams. (49.7 x 28.5 x 3.9) mm
The pressed bars are all made in 99.99% pure gold.
Heraeus makes cast gold bars in the following sizes:
100 grams (44 x 26 x 4,5) mm
250 grams (50 x 30,5 x 9) mm
500 grams (91 x 41 x 7,6) mm
1000 grams. (116,5 x 51 x 9,5) mm
400 troy ounce ("good delivery bar")
The pressed bars are also all 99.99% pure gold. Heraeus also makes good delivery bars (cast) in gold (400oz), silver, platinum and palladium.
Heraeus makes kinebars in 1g, 2g, 5g, 10g, 20g and 1oz sizes. These also are 99.99% pure gold. The kinebars have no serial number.
Heraeus also makes tael bars and introduced a 5 tael bar in 2002. A 10 tola bar has also been produced. 
Heraeus Gold Bar Authentication
The kinebars come with a certificate of authenticity, however Heraeus states that a certificate is not needed for the other bars in their range, because their authenticity is guaranteed by established bullion dealers and banks to whom Heraeus releases the bars.  All Heraeus bars now minted have serial numbers, however some of their older bars do not.
Heraeus Gold Bars - References:
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