Fraudulent sellers of rare and bullion coins often use many of the same techniques as legitimate dealers to attract buyers. Some advertise in newspapers and magazines and sometimes meet prospective clients through financial planners and insurance agents. Others use a popular sales method known as telemarketing. For example, you may be approached about coin investingthrough an unsolicited telephone call, or you may be called after you have responded by mail to an advertisement. Because telemarketing fraud has grown rapidly over the last several years, you should be particularly careful about committing yourself to any purchase from an unsolicited caller.

Recently, some fraudulent sellers have been using multi-level marketing systems, also known as pryramid schemes to sell coins.

Compare different web sites about coins to learn as much as possible before investing in gold coins.