I have catalogued 39 labels used in 30-hr, weight-driven clocks by Chauncey Jerome and his firms in Bristol, CT during the years 1838-1843. Case production started in New Haven in January, 1844, and I believe that marked the end of Bristol-labeled clocks. Many of the labels are displayed below, with my best guess for when they were used. Some of the labels had more than one variant or print run. Variants are identified by very subtle differences in design elements that are often only apparent with high resolution images. The last of the Elihu Geer labels is an example with at least six variants, with differences between them indicated primarily by the upper termination of the columns making up the left and right border of the label. Print runs are distinguished by identical design elements but subtle differences in spacing of characters (for example, the spacing and position of “PATENT” relative to “BRASS CLOCKS”). Although little is known about the number of labels in a typical print run, from the number of labels Jerome used over this period, he was getting less than two months usage out of each label batch.