I am about to overhaul another in-floor safe similar to
this Major door from one of my prior posts and would appreciate if anyone knows who actually made this. I am of course doing my homework before cracking it open to give it a thorough clean. It is a bit gritty and hangs up a little in a few places. Best to do now before it gets worse. To help better identify what this is, I first tried to reach out to the company on the top nameplate but they are apparently long since out of business. Also reached out to Amsec and provided the barely readable S/N on the bottom, and they say it isn't their serial number. That seemed rather odd, especially since it clearly says "T625" on the top, which
is an Amsec in-floor tube safe part number.
From the top, this safe door is nearly identical to the Major:

Side view of the door:

Bottom of the door appears to have a S&G keyway to change the combo,
not the round hole found on my Major door:

However, dialing the combo to the normal "change" position does
not allow a S&G change key to enter.
Always nice to know what you are getting into before you get there...