Worldwide. Pair of Small Gold Coins: Great Britain. Half Sovereign, 1984. KM-942. Weight 0.1176 ounce; Panama. 20 Balboas, 1981. KM-72. Weight 0.0344 ounce. Butterfly. In original holder. Lot of 2 coins. Both pieces, Brilliant Proof. Estimated Value $160 - 180