All gold and silver purchased via Stacker Market is fully allocated and backed physically, whereby you get a fractional ownership of a full 1 kg gold bar or large format silver, i.e. 100 ozt or 1,000 ozt. Such allocations directly correlates to lower (trade fees) and tighter bid/ask spreads to the end-user. As everything is pooled, we are unable to provide the serial numbers when it is in your Stacker Market account. In order to obtain the serial number, you will need to make a redemption of the bullion in any of the following denominations: Gold* – 1 gram (0.0321507 ozt) – 5 gram (0.1607537 ozt) – 1 ounce (1.0000000 ozt) – 50 gram (1.6075373 ozt) – 100 gram (3.2150747 ozt) – 1,000 gram (32.1507466 ozt) Silver* – 1 ounce (1.0000000 ozt) – 2 ounce (2.0000000 ozt) – 5 ounce (5.0000000 ozt) – 10 ounce (10.0000000 ozt) – 100 ounce (100.0000000 ozt) – 100 gram (3.2150747 ozt) – 1,000 gram (32.1507466 ozt) *Note: – Your bullion will not be sold. Redemption is for you to convert your holdings into smaller denominations. – Additional shipping/insurance and premium manufacturing fees are applicable.