Old bullion is a term commonly used in the world of finance to refer to gold or silver that has been stored for a long period of time. However, there are many other synonyms for the term that can be used depending on the context. Some of these synonyms include antique bullion, vintage bullion, historical bullion, classic bullion, and seasoned bullion. Each of these terms evokes a slightly different image or connotation, so it's important to choose the one that is most suitable for your needs. Ultimately, whether you're a collector or an investor, using the right terminology can help you communicate effectively and build your reputation in the industry.