partners are the other countries of the EU, especially France and Germany, China and the United States. Coins and stamps One of the sources of income from tourism comes from the sale of historic coins and stamps. In 1894, San Marino issued the first commemorative stamps and since then that has been part of a large livelihood in the republic. All 10 of the Post Offices of San Marino sell these stamps and collectible coins, including "Legal Gold Tender Coins". Traditional economic activities in San Marino were food crops, sheep farming, and stone quarrying. Today farming activities focus on grain, vines, and orchards, as well as animal husbandry (cattle and swine). References San Marino