CombiBarâ„¢ products manufactured by the Swiss LBMA refinery Valcambi retain purchasing power well and serve as an excellent means of payment. A CombiBarâ„¢ consists of one-gram gold bars, which can be conveniently removed if desired without wasting gold at the folds. A CombiBarâ„¢ consists of 999.9 pure investment gold bars, and the product is therefore VAT exempt.