while I will profess that a Nivada Grench chrono is not a unicorn this one is per the following link the allegedly "rarer" of the few models out there.
Nivada Grenchen | The Watch Spot
Now I took a shot at fleabay and it turns out the watch looks really good cosmetically.
Movement wise it is a Valjoux 23 column wheel chrono in great looking shape, no rust....case has no pitting so overall a nice package.
The movement needs a serious service sine 300 s/d fast and 211 amplitude but that is fixable.
Now onto the question, clearly the hour hand has lost lume, and the 1 and 2 o'clock marker have no lume left at all.
so there goes the rub, would you relume the hour hand and 1, 2 o'clock markers to match the overall look.
I am aiming towards a yes