Stunning Ithaca “No. 11 Octagon” calendar clock made by the Ithaca Calendar Clock Co. in Ithaca, NY. Features a double dial calendar face with a spring driven 8 day E.N. Welch time and strike movement and an H. B. Horton patented perpetual calendar mechanism in a gorgeous walnut case. Patented “April 18th, 1865, and August 28th 1866”. In excellent condition, keeping time and striking out the hours properly. 21″ tall x 11 3/4″ wide with a winding key.