At 10 grams, it almost certainly won't be made of gold. See that "8" in between the pillars? That's the denomination, 8 escudos. An 8 escudo coin ought to weigh about 27 grams. 10 grams would be about right for an object the same size as an 8 escudos, but made of brass.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis