It's an oddity. The dial printing is generally very good, and if it was refinished, the quality is high. "CENTERCHRONO" does strike me as being a bit dark, and not as fine as some, but like all manufacturers during that period, Mido surely must have outsourced their dials to more than one maker, and there were some small variations.
I have seen just one other example, though the poorly placed lume raises some question:
https://www.europeanwatch.com/watch...terchrono-Circa-1940s-SS-/-Leather-22897.html
The first generation of Mido chronographs were called "Multichronos". and I Suppose that it may have been possible that there were a small number of early Multi-Centerchronos with only "CENTERCHRONO" on the dials. But I have never seen any associated marketing material that would support that, and so I remain a bit skeptical.