I find myself suddenly drawn to this marque and am trying to educate myself.
Does anyone know when the label for Certina went from script to block lettering? They seem to be using script in the 40's and block with the little round logo by the 60's, but I haven't seen enough of the late 40's through 50's to note the change yet.
Also, the Swatch Group website says that the Grana name started phasing out slowly in the late 40's. Does anyone know when it was finally gone?
It appears that this company didn't use serial numbers in the way that most did. Many of their movements are documented, but they seemed to make enough that some are not. I like to know what I'm looking at.
Thanks in advance if anyone knows more about this company.