![]() ![]() Philadelphia Watch Case Co S Serial Number Usually Fiveīelow or near the name is a serial number usually five to nine digits long.Ī smaller number, ranging from two to four digits, may also be engraved. The watchmakers name should appear on the bridge, a flat sheet of metal over the movement. ![]() ![]() Jewels are lubricated friction points where the spring-loaded mechanism and its gears, called a movement, move to operate the watch.ĭiane ShearDemand Media Insert the case blade under the lip of a snap-back vintage pocket watch and pry it open.ĭiane ShearDemand Media Use the loupe to examine the movement. It may have 17 Jewels or a different number of jewels embossed.Ī good quality vintage pocket watch will have a minimum of 15 jewels. Watchmakers Hamilton, Elgin, Waltham, Illinois, International Watch Co.ĭiane ShearDemand Media Examine the dial below the hands post with the loupe. Most vintage pocket watches have the manufacturers logo embossed on the dial. However, some Swiss watchmakers imported unassembled watches with no markings to the U.S.ĭiane ShearDemand Media Examine the top portion of the dial of the vintage pocket watch. Philadelphia Watch Case Co S Serial Number Usually Five.
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