Lock needed for old Adesco Floor Safe

I have an old Adesco Floor Safe - Model S812 - with a combination dial lock that has broken. This lock is "shorter" than current Gr2 Combo Locks. Its dimensions are roughly 2-3/4 x 2-1/2 compared to and S&G Grp2 at roughly 3-3/8 x 2-1/2. Where can I get a replacement lock? Shep Bryan 714-550-4123