Vintage Art Deco Concord Watch Co. 15 Jewels Green Guilloche and White Enamel Face Clock. Excellent Original Working Condition. Dimensions: 3.0″ X 3.0″. Please contact me if you have any questions. Thank You for Looking. The item “Vintage Art Deco Swiss Guilloche Concord Watch Co. 15 Jewels Clock” is in sale since Wednesday, November 18, 2015. This item is in the category “Collectibles\Clocks\Vintage (1930-69)\Other Vintage Clocks”. The seller is “tomi150″ and is located in Santa Clarita, California. This item can be shipped worldwide.