I have run a couple MOs and they will definately put ink on paper, but they were a 'lightweight' design to cost compete against the new imports (think Asian)of the late 80s and early 90's era. Early serial #s dont have some of the later upgrades that the later models got, so if there are no crosscut gripper pads and 'jack bolts' on the shafts, beware. Unit to unit registration can be a problem, and heavy coverage with any amount of tack will make your pressmen gray at a young age. Just sayin.
After a lot of years on MO's, the CD74 on our floor is like heaven on earth to run.