skip to main content
Free shipping on all UK orders
Sell today for same day payments
All coins quality checked/authenticated

100g Gold Bullion Bar : Pre-Owned (Best Value)

100g Gold Bar
(VAT Exempt)
Our best value hundred gram gold bars are offered at really low premiums over the gold spot price. Chosen from our available stock on an 'our choice' basis, each bar has been thoroughly tested by our team of experts situated on-site to determine authenticity. Each individual bar is stamped with the refinery logo, weight, fineness and a unique serial number. Being pre-owned from the secondary market, some 100g gold bars may be issued loose and they'll either be in a 'cast' form or a 'minted' form. The brand issued can vary, however the fineness of each gold 100g bar will be a minimum of 0.999 (24 carat) and will contain 3.2151 troy ounces of the precious metal. Specifications for each brand are slightly different, but generally speaking each pre-owned 100g gold bar we issue will have roughly the same length and breadth as a custard cream biscuit (approximately 51.00 mm by 29.50 mm). The thickness of each bar is around 3.00 mm to 4.50 mm, which influences the other dimensions. As we only sell what we physically have in our vaults, this product is sometimes unavailable - you can sign up to our useful 'Track Product' function to get notified when we're back in stock if this is the case. All our 100 gram gold bars we offer for sale qualify as investment gold for tax purposes, which means they are VAT-free. Our advertised price includes free insured shipping to UK addresses.
Log in to get notified when this product is back in stock.
Track Product

Our choice of 100 gram gold bars available at low margins from The Britannia Coin Company of Royal Wootton Bassett.

Buy 100g Gold Bars

One hundred gram gold bars can be a great investment for those looking to diversify their portfolio or add to their gold stack. Each bar contains 3.2151 troy ounces of pure gold, struck in at least 0.999 fineness (24 carat).

The dimensions of a typical gold 100g bar will vary depending on the refinery. An approximate length and width guide is around 51.00 mm x 29.50 mm, which is comparable in dimensions to a custard cream biscuit. They can measure between 3.00 mm to 4.50 mm in thickness.

Brand Our choice of refiner
Dimensions Varies
Weight 100 grams
Gold Content 3.2151 troy ounce
Fineness 0.999+
Our Price £5,383.61

Nearly all gold bars come in square and rectangular shapes, which makes the storage of them comparatively simple. They conveniently fit inside a home safe or a safe deposit box. They can even be neatly hidden under the floorboards!

Best Value Gold Bars

The 100g investment gold bars we offer are usually offered loose, without any outer packaging. 100g gold bars are a very popular method amongst individual investors to own the precious metal because of their low premiums. They're common in both 'cast' format and 'minted' format, with the cast bars generally being slightly cheaper to produce. The Britannia Coin Company doesn't differentiate between the two types as they both contain exactly the same amount of gold.

'The brand and style of your gold bar can vary as it's allocated on a random basis from the stock we currently have. This allows us to offer them at very low premiums.'

Our team of experts have the latest XRF technology on site, using it to check the metal composition of each bar we come across. This ensures you get a genuine, correct-weight gold bar every time. You can read more about our XRF machine on our sister website, Gold Traders UK.

Investing in Gold Bullion

Purchasing physical 100 gram gold bars is an easy way to acquire the precious metal and there's a very liquid market in them worldwide. The 100g bar is an incredibly popular weight of bar amongst investors and is universally recognised. Here's some of the top advantages of investing in pre-owned 100g gold bars:

  • Low Margin - 100g gold bars are sold at a low premium above the live gold price, and are typically cheaper in terms of price per ounce than gold coins
  • Authenticity - all of our gold 100 gram bars are stamped with the refiner's logo
  • Security - all of our bars come from reputable refiners, and we test each bar we receive to make sure it's genuine
  • Recognisable - genuine gold 100g bars are easily recognised by reputable bullion dealers worldwide, making them easy to liquidate at a future date
  • Store of Value - gold is regarded as an inflation hedge, which has protected wealth over time
  • VAT Free - all gold bars sold by the Britannia Coin Company meet the HMRC definition for investment gold, which means they are exempt from VAT

Gold Bars vs Gold Coins

For investment purposes, it's wise to purchase gold at the lowest possible premium over the live spot price, irrespective of design, shape or metal fineness. The trend is that larger gold bars such as these 100g gold bars are cheaper than gold coins in terms of percentage premium. 

'If you're looking for gold bullion bars at low premiums, our pre-owned 100 gram gold ingots are a brilliant starting point.'

Other considerations to think of are capital gains tax implications and the ability to liquidate part of your gold portfolio. You can read more about this in-depth in our Buying Gold Bars vs Gold Coins article.

If these considerations are of no concern to you, then the competitive margin offered on these pre-owned hundred gram gold bars can make them a very attractive investment option. We have acquired a large amount of expertise from the years we have been in business, so we feel we can provide useful information for investing in gold for the interested layperson. However, please note that this doesn't constitute as financial advice.

Pre-Owned Gold Bars

Pre-owned gold bars are an excellent choice if you're looking for the cheapest premiums on gold bullion. 

'We acquire these bars from the secondary market, which allows us to offer them at really low premiums.'

They're sold purely for their precious metal content, irrespective of brand. Some bars may have very slight blemishes on them, which is perfectly normal on second-hand bullion bars. We guarantee that all these bars will contain exactly one hundred grams of pure gold.

Gold Refineries

All the pre-owned 100g gold bars we offer for sale come from highly regarded and reputable precious metal refineries. This is a list of a few examples of pre-owned bars we stock:

  • Umicore
  • Heraeus
  • Metalor
  • PAMP Suisse
  • Baird & Co
  • Valcambi
  • Royal Mint Refinery

Authentic investment gold bullion bars should be stamped with the weight, purity and refinery. Most 100g gold bars have a unique serial number as well, but it should be noted that a minority of brands chose to omit this. This doesn't affect the bullion value of the bar.

VAT Free Investment Gold

One of the most compelling reasons to purchase investment gold bars is the fact that the precious metal has VAT-free status. Investment gold has been exempt from VAT in the UK and the EU since January 2000.

All gold bullion bars sold by The Britannia Coin Company meet this definition, meaning HMRC will treat them as VAT-exempt, therefore allowing you to buy gold tax free.


We are always proud to show off our previous customers experiences with you and what they thought of our purchasing through with Britannia Coins.

Ekomi Logo
Christopher DeSantis
5th January 2024
Phil H
1st September 2023
Alison M
31st August 2023
David R
30th August 2023
Roberto S
29th August 2023
Mark D
24th August 2023
Marc G
24th August 2023
Malcolm P
24th August 2023
William David E
24th August 2023
Kevin A
24th August 2023