Contact us Martinez Coins San Diego at +1 619-955 6166 for any kind of help regarding coins sale and purchase. We speak English, Spanish and Farsi, this way we accommodate people from different cultures. Coins have been used primarily as an exchange method or for trading. They are often issued by the government and they hold a patriotic and symbolic value. Historically, Coins have been used throughout the world and in some language’s “coin” means currency. There are different types of coins that we accept, it could be rare coins, bullions, gold, silver and collectible coins. We buy and sell coins. We are a coin exchange where you can get cash for coins or you can come in and buy them.