i just bought a 1550 gold 2 esqudo at a auction late at night when every one went home . they remembered they had another gold coin so they put it out for bid. after a few minutes i was aworded the bid. i don<t know much about gold coins but i bought it anyway. since then i took the coin to a jewler and had it tested for gold content he could only test up to 18kt he said it was a least 18kt also i had it weighed it weighs 2.2grams . how did i do ?