1 oz 9999 Gold Bar Valcambi Suisse (In Assay) Metal Content: 1 troy oz Purity: .9999 Manufacturer: Valcambi Serial number can be different. The 1 oz Valcambi gold bar is a Swiss-made product from an internationally renowned gold refinery. The company, a leader in the market, was first established over 50 years ago in Balerna, Switzerland. Valcambi gold bars are recognized for their quality and elegance. Valcambi's 1 oz gold bar represents a great addition to any investment portfolio given the lucrative history of gold. As an investment, this product is an excellent purchase for both novice and experienced investors.