Why Do You Recommend Older-Issue, Foreign Fractional Gold Coins…

Instead of modern issues or American Eagle ?
Modern issues like American Eagles, Maple Leaves, Philharmonics, and Nuggets include half, quarter, and tenth ounce coins: the smaller the coin, the higher the cost per ounce. With the smallest coins, premiums over the gold content approach 15%. That makes no economic sense because gold is gold. British sovereigns (containing 0.2354 troy ounce fine gold), French 20 francs (0.1867 oz.), Swiss 20 francs (0.1867 oz.), German 20 marks (0.2304 oz.), Netherlands 10 guilders (0.1947 oz.), the whole series of Mexican peso coins, and a number of other gold coins offer lower cost per ounce and good liquidity. Not recommended are gold coins so infrequently seen in this country that you will suffer a big discount when you sell them, such as Iranian pahlavis (0.2354 oz.) or Saudi guineas (0.2354 oz.). If you can’t sell them, they’re not a bargain.