I have just recently gotten access to 2 mosler flat sill vault doors that have not been opened since the early 1970's. the serial number says that it is from 1937 but I have no idea which lock is installed. the combo has long been forgotten and I want to try to open them through manipulation but, would like to know which model lock I have first. Both vault doors are in the same building, which has not been used in many years and will fall down within the next ten years probably. One is on the first floor and the other right above it on the second floor. I am attaching a picture of the lock if anyone can tell me what it is, I would greatly appreciate it.
Thanks,
Eli


