plain T!!!
But you're right, even plain T dial would have been much easier to fabricate as a prototype instead of the sunken T- dial. The brown lacquer they used on this dial is about twice as thick as they used on the standard black T- dials when converting from the inherited pre-V dials, you can clearly see how thick it is an the numeral edges, look at the 9 on this photo in normal light, then also the others in direct sunlight:
Cheers and happy new year
Ben