One word... UGLY... Not the the 83 is such a pretty machine to start with... but how does the mech work? don't see any actuator or cords running to the vend mech?
These conversions are electric vendors, you can see the wiring just below the solenoid cover at the bottom of the stack, & the coinmech harness is running along the bottom hinge area of the main door. ugly, perhaps, but it is a clever bit of recycyling & re-engineering of an otherwise (then) obsolete single flavor vendor into a multi fllavor shelf machine.