'hebdomas' pronounced 'heb.do.mas. It is the Latin word meaning the number 'seven' a week; seven days or the seventh day. I think most of you know that part of my passion in collecting is fired by the 'unusual'. I can not resist a timepiece that has some weirs, awesome indeed unusual feature. Therefore I have always loved (but not owned) a Hebdomas 8 day watch. These handsome pieces have the novelty of running 8 days (jours) and an open balance wheel and balance cock. The watch was made by the Swiss company Schild & Cie (not to be mistaken for Ebauche maker A. Schild & Cie). But the history of these unique watches goes back far further indeed to 1888. The history of these timepieces with Arthur Graizely who bought an 1888 patent for an 8 day watch from Irenee Aubry, she was granted this patent in 1889, and it was purchased by Graizely, who founded the firm Graizely Freres (and brothers) and started production. Actually the watch patent was meant to run for 15 days but runs only for 8 days and therefore was given the name 'Hebdomas' In 1893 the firm won Gold medals in Chicago, in Geneva 1896, Paris 1900 and Milan 1906 - These medals or accolades can be seen boldly on the back movement. In 1915 the company was reorganized as Schild & Cie and the patents and trademarks were transferred from Graizely & Cie. Schild continued to produce these pocket eight day watches in a wide variety of shapes and designs alarms, then wrist versions. I believe is still in business to-day. The Museum owns a number of these style of watches, and I decided to pull them out of hiding to share with you all to-day. Here is the first: Hebdomas - 8 day pocket watch. Manufacturer Schild and Company . Patented design 1906 by Arthur Graizely from an original previous patent of 1888. Open escapement bridge and wheel.C 1910 Nickel, open face case Visible Escape & Balance. 18 lignes, 8-day movement with visible balance on dial, gilt balance bridge, lever escapement, white enamel Arabic dial with circular chapter marked Hebdomas 8 Jours 8 Days, silver 'lepine' open face case The second: look at that lovely enamel 'telephone dial with both blue Arabic and red 24 hour numerals - open (visible) balance wheel. Thirdly- just slightly different: Now - My Favorite!! - Not marked Hebdomas - may be another manufacturer? I could not trace Brevet number! Dial is enamel but off white - yellow- All appearances look Hebdomas but not marked on dial NOR the accolades on movement - Interesting to me! Hebdomas 'style' - 8 day pocket watch - Probabaly Arthur Grainger and Company/ Schild and Company. Balance wheel cock marked:Brevet 37502, But The 'Creme de la Creme' This magnificent piece is on permanent display, as it should be. - 3 Dials set for the three different USA time zones (eastern, middle and west) - Hamilton Cross country come to mind from 1950s?? Now! Take a look here - I can pick a winner! http://www.ebay.com/itm/Rare-1900s-...6161342?pt=Pocket_Watches&hash=item231b8e3abe Acknowledgements: “Images are the property of the National Watch & Clock Museum, Library & Archives and may not be reproduced without permission.” Wikipedia - Hebdomas Kathleen H. Pritchard - Swiss Time Pieces.