Great article! I enjoyed the history behind the coin. I used to not look at coins less than 90% fineness, but considering how good it looks after all these years, I can see why they went for lesser purity to enhance its durability during circulation.
These coins were more commemorative. People kept them at home as a souvenir. That's why they're in such good condition.
Oh, ok. That makes sense. Thanks for clarifying that. 🙂