Tower Desk Clock for Columbia University. Silver Metal and Mahogany Finish Wood Dimensions: 2 1/4" x 2 7/8" x 3/4". åÊSpecial Order Item. Item comes with a complete warranty by CSI. Please allow up to 3 weeks BEFORE item ships. May only be returned for repair if defective. Item will be shipped separately from clothing items. Gift wrapping currently not available. Complete warranty coverage provided.