How/where can I sell a Gold old coin (probably has collectible value?

I got 1903 coin, Should I sell it?

• After the United States took control of the Philippines, the United States Congress passed the Philippine Coinage Act (March 3, 1903), established the unit of currency to be a theoretical gold peso (not coined) consisting of 12.9 grains of gold 0.900 fine (0.026875 XAU), equivalent to ₱2,933.07 modern pesos of as of 22 December 2010.[7] This unit was equivalent to exactly half the value of a U.S. dollar [8] and maintained its purchasing power until the opening day of the Central Bank of the Philippines in 1949. The act provided for the coinage and issuance of Philippine silver pesos substantially of the weight and fineness as the Mexican peso, which should be of the value of 50 cents gold and redeemable in gold at the insular treasury, and which was intended to be the sole circulating medium among the people. The act also provided for the coinage of subsidiary and minor coins and for the issuance of silver certificates in denominations of not less than 2 nor more than 10 pesos. It also provided for the creation of a gold-standard fund to maintain the parity of the coins so authorized to be issued and authorized the insular government to issue temporary certificates of indebtedness bearing interest at a rate not to exceed 4 per cent per annum, payable not more than one year from date of issue, to an amount which should not at any one time exceed 10 millions of dollars or 20 millions of pesos. Should I sell it? Where could I sell it? anyone know how much will it be?

• Answer:

  You wrote a lot but never did say which denomination 1903 coin you had. When we know that we may be able to give you an answer. None of the denominations of that date are scarce. Value will more depend on the coins condition.