The one of the left silences the chime. The one on the right regulates the time slower/faster. The clock is complete with key and pendulum and is in running condition. It produces a beautiful chime on the quarters, at the half hour and at the top of the hour. Measures 16 inches in heigth, 13 inches in length and 8 inches wide.As noted in the images, the clock has light wear to the case, with a few small scuffs, scratches and knick's which are acceptable and expected with an item that is over 100 years old. The clock has been well cared for, is super clean and is absolutely beautiful (see images). The Westminster Chime on the quarter brings real, old time warmth to the home throughout the day. If you have any questions please ask and we will do our best to provide a timely response. We will apply the discount and send you an invoice. This item is in the category "Collectibles\Decorative Collectibles\Clocks\Desk, Mantel & Shelf Clocks". The seller is "blacknbluefrog" and is located in this country: US. This item can be shipped to United States.