Take a close look…original crystal on the ref 5907 will be signed Mido in the center. My understanding is that the crystal diameter is 30.9mm, though I have not personally measured.
Mido Ref 5907 Crystal
Take a close look…original crystal on the ref 5907 will be signed Mido in the center. My understanding is that the crystal diameter is 30.9mm, though I have not personally measured.