Does Tudor even have a quartz movement?
OP, for a case back opener, get one of the rubber ball openers. I havent come across a case back that I couldnt open with it, and it is easy to use and doesnt scratch up the back. Ive taken off 40 year old watch backs on Divers that im pretty sure were never removed during the life of the watch with them.
https://www.amazon.com/Friction-Ball.../dp/B0058EDAUA