I've inherited an old keyless lock and would love to be able to open it. Serial number is 7999 and it is a JBMKL Co. Master Special. Can someone help with a combination code? Click image for larger version.  Name: IMG_0485.JPG  Views: 8  Size: 203.7 KB  ID: 10235Click image for larger version.  Name: IMG_0486.JPG  Views: 6  Size: 202.6 KB  ID: 10236