1680 red submariner service dial super rare

[gssl76]

Hi there, I've been hunting a red sub for a while and found one finally but I'm not sure about its dial.
The owner said the dial was the unique mark VIII service dial with "swiss-t<25" instead of just "swiss" although it was not tritium dial.
Are there really that type of dials made by mistake of rolex factory?
I'm skeptical of its authenticity and suspect its dial was changed later not by rolex service center.
Is there anyone who knows about that dial? What do you think about it?

Four pictures are the same watch and last picture is real VIII service dial.