Here are photos in my service data base of your safe in all it’s glory, this with it’s rare Hall’s label.
The lock is what I refer to as a Hall’s direct entry. A 4 number combination entered L4-R3-L2-R1. You can verify this lock by turning the handle in the opening direction which in turn will cause the dial to bind.
If your dial grip is not to worn you might make out Hall’s Safe CO Cincinnati O USA or if it was private labeled THS CO PO Box 846 Cincinnati O USA
DH


