I have had quite a few Rock-ola 1422s in the past 45 years and know that two different locks were used during its production run for both the front and back doors.  One is the Illinois lock that uses the D-032 key and the other is this 9/8 inch long Bell lock on the front door and a 7/8 inch long Bell lock on the back door.

Needing to make a decision  I recently decided that the following may be accurate, but let me know if you think me wrong:

The 9/8  inch long lock with a special pinned cam and using the 61 RO 1 key is used for the front door on some 1422s and possibly the 1426.
The 7/8 inch long lock with a slightly off-set cam about 1.0 or 1.25 inches long and using the 61 RO 1 key is used for the back door on some 1422s and possibly the 1426.

The locks on the 1428 are the same size but use the 62 RO 1 key.

The 5/8  inch long locks with flat cams about 1 inch long and key codes beginning with 60 or 63 were used on the brown 1422 cash box which has the lock near the top edge and the black 1428 cash box which also has the lock near the top edge.

The 5/8  inch long locks with flat cams about 2.5 inches long and key codes beginning with 60 or 63 were used on the blue 1426 cash box which has the lock near the center of the front face.