Nope, there is no possibility that the dial is original.
Among many other 'tells', when you find a dial that clean, and a movement (and or case) in far worse condition, the likelihood of originality is very small, at best.
phillips (!) offered one, also monopushers exist....and this makes more sense.
I'm not an expert on UN, but something about the linked example doesn't seem correct, either. Why would the tip of the minute hand reach into the pulsations register? Makes no sense.