Found on many machines from 1960 and up.  V-56 V-63 V-77 V-90 V-110 V-125 V-126 V-148 V-154 V-190 V-304 V-348 VMC-56 VMC-63 VMC-77 VMC-90 VMC-110 VMC-125 etc.  

If your bezel looks like this or is similar this lock will fit. Bezel shown is for illustration purposes.  It is NOT included so if you need the bezel order HP21A.

To drill this lock out of the machine without damaging the bezel follow these instructions:  Drill into the very center of the lock starting with a 3/16" drill bit.  Drill in about 1/2" deep.  Switch the drill bit to the next size up and drill again in the center of the hole you just drilled.  This time only drill in 1/4".  You will understand later why the depth changes.  Repeat until you just past the outer ring of where the key entered.  At this time the pins and springs should fall out of the lock.  If they don't fall out, pull them out with narrow needle nose pliers.  Once this happens you can put a small screw driver or stud extractor into the 1st hole that was drilled deeper.  Now you know why there are two depths.  Turn it one way or the other and it will open up.  Now, open door and remove the rest of the lock.  Order the new lock from The Soda Jerk Works so you have it ready to go.