Specification Brand : Generic BulletPoint1 : 16 Size DuraPower Pocket Watch Mainspring Part #6164 - MX1438 MX1438 DescriptionHere is a new old stock mainspring. This one is for a DuraPower 16 size pocket watch. Part number 6164. BulletPoint2 : If you have any questions please contact us through messaging. We will be more than happy to answer all your inquiries ClaspType : Jewelry Clasp CompatibleDevices : Watch Department : mens ExternallyAssignedProductIdentifier1 : 0618455616334 ExternallyAssignedProductIdentifier2 : 618455616334 ItemName : Replacement for 16 Size DuraPower Pocket Watch Mainspring Part #6164 - MX1438 ItemTypeKeyword : pocket-watches Lifestyle : Fashion Manufacturer : generic PartNumber : 542112269883 Pattern : Solid ProductDescription : 16 Size DuraPower Pocket Watch Mainspring Part #6164 - MX1438 ProductSiteLaunchDate : 2023-02-09T06:06:44.196Z Theme : Sports UnspscCode : 31160000