Vintage Bulova School Schoolhouse Octagonal Pendulum Wall Clock. Octagonal shape wood-case, regulator-style pendulum with a black face and gold Roman numerals. This is a time only clock with no other functions. It uses a quartz (battery-operated) movement and requires (1) D size battery. 21"L X 14"W X 2 1/2"D. Very good condition and keeps accurate time.