Some conversions of high-end brands still sell for a high value after conversion. In general, altering a watch will lower the value (and some enthusiasts are ardently against doing this type of conversion). Wristwatch Conversion: Some pocket watches have been converted to wrist watches. Beautiful Antique Elgin Pocket Watch w/ White Dial Including Cobalt Blue Hands & Dedicated Second Dial 14k Yellow Gold Case w/ Intricate Hand-Etched Guilloche Design on Case Black Arabic Numerals Case Serial 479694 15-Jewel Elgin Movement Serial 14405808 Grade 364 Year of Manufacture: 1910 Total Mass 64.3 grams Size 12S Piece Appears in Good Condition.Figure 1 is from the 1947 Gruen Crystal Catalog and defines Style Numbers. The majority of Gruen wristwatches have the caliber and then the Style Number (CCC-SSS). For instance, early Patek Philippe & Co. or Tiffany & Co. pocket watch examples will have greater value than many other brands. As most Gruen collectors know, there is typically a pair of three-digit numbers stamped on the inside back of their watch case, usually in the format or CCC-SSS or SSS/CCC. Brand Name: The brand of the watch can also greatly impact the value.High jewel examples are fervently sought by pocket watch collectors. The higher the quality of the watch, the more jewels it will have. These minimize friction and subsequent wear on the inner watch mechanism. This source shows a watch s/n 144600 from 1919. The verithin was introduced in 1904 and in 1911 had the first national ad in the Saturday Evening Post so they made a lot of them. Their top end prestige watches had low serial numbers. Jewels: The term jewel refers to the industrial grade gemstones used as bearings for gears. Even this does not provide serial number dating and there is reason to suspect that they did not use a single sequence.Adjustments: The number of adjustments (meaning the calibrations a watch has to keep it running accurately regardless of the position in which it is held) add to the watch's value.
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