Two different safe companies manufactured Weatherby safes. Contact information is as follows:
American Security
www.amsecusa.com
11925 Pacific Avenue
Fontana, CA 92337
(951) 685-9680
Serial # prefix- GS and KS
Fort Knox
www.ftknox.com
993 North Industrial Park Way
Orem, UT 84057
(801) 224-7233