Yes. Your bars may diminish in value if you remove them from the blister pack. If the bar is unpacked when it is bought, it is important to ensure that the certificate is not lost and the bar is not damaged.
See Also
How To Buy GoldWhat Countries Have the Largest Gold Reserves?Adding Gold to Your Portfolio as an InvestmentTypes of Gold Jewelry Explained: Plated, Vermeil, Filled, & Solid GoldCoins are often sold in so-called coin capsules, which serve as protection against corrosion. It is important that the coins are not scratched or damaged in any other way when you come to sell them.
Generally, we recommend that you do not remove the products from their original packaging.
