Reputable Manufacturers: Choose bullion bars from reputable manufacturers and refineries, such as PAMP Suisse, Johnson Matthey, Valcambi, and the Royal Canadian Mint. These companies have a long-standing reputation for producing high-quality bullion.
Purity and Weight: Ensure that the bullion bars you are purchasing have their weight and purity clearly stamped on them. Most reputable bars will have a purity of 99.9% (24 karats) or higher.
Certification: Look for bullion bars that come with an assay certificate. This certificate verifies the bar’s weight, purity, and unique serial number, providing an additional layer of security and authenticity.
Dealer Reputation: Buy bullion bars from reputable dealers with positive customer reviews and memberships in recognized trade organizations. Ensure the dealer provides clear pricing and transparent terms of sale.
https://www.a1mint.com/product....-category/gold/gold-

image