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 and express shipping not available. Complete warranty coverage provided.