Seth Thomas GEORGE WASHINGTON Banjo Clock. The "Banjo clock" was a popular style from 1840 to 1940. So you need to open the waist door and see what's inside. Pre-1880 will have a large weight behind the pendulum. These are worth the most and highly sought after.
Pre-1930 will be spring-driven, so there will only be a pendulum. The last clocks of this type had a cheap lever movement, and the space will be empty. I avoid these clocks because they are usually worn beyond repair.One more hint: Clocks from the "early 1800's" didn't say "Made in USA". Marking the country of origin didn't start until 1880.