Westclox 61-C Dura Case Windup, 2 key, alarm. Date 1930 - 1934 Nickel plated heavy metal case. Dial Metal. Patented U.S.A. No. 1709146, No. 1358457, No. 1563431 Des. Pat. No.80614 Other Pats. Pend. Model No. 61-C 401 Case made in U.S.A. by DURA 61C. One of six "Dura Cased" clocks introduced in the early 1930's. Part of the LaSalle Series. The clock has a very heavy metal case. All six are highly collected by Westclox enthusiasts as well as other clock collectors. Most try to get the entire set of six to complete their collection. This clock is dated March, 1931.