Tom Held,
I like the way you think.
I agree with Locksmith.
Humor me if you will. If this is the 4 digit combo, and has never been re-set...
2, 4, 7, 9
1, 3, 7, 5
Let's just say factories often use the same combo's. It used to be funny when a sales rep would just hand me a combo locked case and I was able to open it.
Understand this was a very very tight knit group...
One fellow used 3,0,0,6. It was a no brainer when he came in all smug, and said "open it". I did.
I knew the wifey had gotten him a 2,5,0,6.
For real security we didnt' use combo locks, Special "briefcases" that required at least two different keys , non duplicates, carried by two different folks.
I sometimes used one that was soft sided, metal on the inside of course, 3 keys, and non of us three were to ever ride in the same vehicle, same airplane, or ever be together - except to open that case and after opening, at least one person left immediatly.