This is an old movement in good shape with some corrosion but it should clean up. The plates are about 3 1/4 inches in diameter.If I manually move the pendulum thing back and forth, the escape wheel does advance so I believe it may be possible to get this running. Please ask any questions you may have. The item "Vintage Antique Seth Thomas And Sons Clock Movement" is in sale since Saturday, October 24, 2020. This item is in the category "Collectibles\Clocks\Parts & Tools\Parts". The seller is "cherryhilltrading" and is located in Huntingburg, Indiana. This item can be shipped worldwide.