Woops
·I think it's very interesting that we have an example of two different references and case sizes but identical case style. The 12420 is just under 35mm and housing the cal 285 and the 12510 is just over 37mm and housing the cal 287.
Do we have any other known examples like this, with the same case design and manufacturer but in two different sizes?
I have also been wondering about this and think it would be a fascinating area of research, probably deserving of its own thread.
Niche references like the Climate-Proof Compaxes were also offered in specialist 35mm and 37mm cases though I couldn't say for certain these cases are identical without a deeper dive. Off the top of my head, I reckon the early Aeros and the Polerouter family would also be good places to check for identical cases in difference sizes but I'll defer to the experts on these models.



