More boring promotion for the little Gruen pocketwatches. Gruen started the 1920+ popularity of the small thin pocketwatch with the patented Verithin in 1904. After 10+ years sales improved, and the huge compared to Gruen, Waltham answered with a very similar 10 size in 1918. The one shown here is best of many similar Waltham 10s grades. Did not use the Verithin gear train arrangement but looks like a copy. Click second time for details.