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Watch Case Part Assortments

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                                              JBC Legacy Watch Parts Database

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                                              MS-JA104

                                              MS-JA104

                                              Mainspring 17.5-4.5-21.5 Dbh - MS-JA104

                                              $25.50

                                              Elgin Mainspring

                                              • Width : 2.65mm
                                              • Strength : .185mm
                                              • Length : 21.50 in
                                              • End Type : DBH - Double Brace & Hole
                                              • Size : 16/S
                                              • Factory Number : 817, 4931

                                              Specifications

                                              Historical items
                                              BC0079087
                                              Interchange items
                                              BC0079087, JA-104, and JA104
                                              Weight
                                              0.1 oz

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