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                                              JBC Legacy Watch Parts Database

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                                              MS-JA308

                                              MS-JA308

                                              Mainspring 18-5-21 Tbrace - MS-JA308

                                              $26.63

                                              Hampden Mainspring
                                              • Width : 2.70mm
                                              • Strength : .180mm
                                              • Length : 21.00 in.
                                              • End Type : TB - T Brace
                                              • Size : 18/S
                                              • Factory Number : 4697

                                              Specifications

                                              Historical items
                                              JA-308
                                              Interchange items
                                              JA-308 and JA308
                                              Weight
                                              0.1 oz

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