It is wise to be skeptical. I'd classify it as "large inscription", based on the pics in Krause. A genuine coin in that condition would be worth thousands. Unless you've purchased this coin from an acknowledged expert in this series, and paid big money for it, it's highly unlikely to be real.
Easiest check is the weight. The tael should weigh 37.7 grams - over 10 grams heavier than a normal dollar. A correct weight doesn't prove it's genuine, but a wrong weight does prove it's a fake.
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