First of all, it depends on the issuer. He decided to strictly stipulate the number of issues. The products issued by companies are not as good as those issued by the mint, and the appreciation ability of bank issues is strong, because he can't guarantee the reliability of the quantity, and Chinese cabbage can't be used as a collection; Then look at the theme. It is very meaningful that special events occur in special periods. This is the potential value of precious metal premium. The technology of gold collection is invisible to most people, but everyone can understand the theme. It is up to everyone to weigh. Thirdly, it is right to buy gold, whether you know how to collect it or not. Now when the market is at the bottom of gold, people with spare money can consider buying gold collectibles, which should be more reliable than stock market futures.