Great little watches. I have two. You may know this already, but the 6431/32/33 was used in many entirely unremarkable dress watches in the early 80s. These movements look nearly identical to the 6458. The dress watches sell for pennies, so it might be worth buying one for a few bucks to see what interchanges? If I had to guess, I'd say the 6458 is simply a higher torque version of the 6432.
From what i can figure out is that these are all based on the same movement but with different features. 6430=base model with only hour and minute hands, 6431=added seconds hand, 6432=added date, 6433=added day, 6458=same as 6433 but crown at 4 o'clock. I'm confident that all these have interchangeable parts.
that's the great thing about automatic's you can replace the parts,
Great little watches. I have two. You may know this already, but the 6431/32/33 was used in many entirely unremarkable dress watches in the early 80s. These movements look nearly identical to the 6458. The dress watches sell for pennies, so it might be worth buying one for a few bucks to see what interchanges? If I had to guess, I'd say the 6458 is simply a higher torque version of the 6432.
From what i can figure out is that these are all based on the same movement but with different features. 6430=base model with only hour and minute hands, 6431=added seconds hand, 6432=added date, 6433=added day, 6458=same as 6433 but crown at 4 o'clock. I'm confident that all these have interchangeable parts.
@@JMNTN Agree on interchangeability. My guess would be the 6458 also has larger pinions to accomodate the larger hands of the diver models.