These are legal U.S. tender, minted in the U.S. Not common in the U.S. but still valid.
Pay attention to your other coins though. Ecuador does mint its own coins that match the American ones identically (1, 5, 10, 25 and 50 centavos) and also has some older 1 sucre coins that match these 1 dollar coins. Those would not be legal tender in the U.S., I'm pretty sure.
I was just giving some info... I'm not saying they're fake or anything. I actually found it quite interesting to have the Ecuadorian versions of the coins.
Naw all good. To be fair, how many of us in the US know Ecuador uses American dollars?? I had no idea so I'm glad you posted. This is a cool tidbit of info!