To be fair to the seller of the machine photographed, the ':L'-plate might be appropriate! It looks as if does take a pride in his machine-tools but was genuinely either unaware of what he was doing, or doing the best he could at the time.
It is fine as what it is – a very good drilling-machine with a co-ordinate table, and possibly fitted with a raising-block to compensate for the table-height.
It most definitely is NOT for milling though. No drilling-machine is.
I'm a bit wary of that motor-frame too. It is difficult to make out but does it rely on tilting the frame to tension the belt; in a direction that would pull the belt out of line with the Vee-grooves? Not good for the belt, pulleys or bearings. I would have bolted the machine's stand to the floor and the motor-frame to the wall or to pillars rising from the stand, with a different tensioning arrangement.
Up-grading to a Centec? Yes, that is a proper milling-machine but with a much smaller table and travels than on that drill.