Document Date: 1931 Document Title: 1931 Westclox Color Catalog Pages, C. M. McClung & Co. -> 298D Photo Match: Different case color Model Description: TOM THUMB. For dresseer, school room, kitchen or office. 2 3/16 inches high, 30-hour. No alarm. 521 Blue. Westclox Sales Number: 521 Retail: $1.50 USD