I have a series of questions about this company and the later Filarmonica razor as well.
There are razors the are marked Jose Monserrat Pou that are not Filarmonica razors, I presume these are pre Filarmonica razors. What years would they have likely been produced?

The Filarmonica razors come in different models as in Double Temple and Novadur. What is the difference between the different models of the same size?

Is there any difference in the grind between a 13 and a 14? I know there is the obvious width difference but is the 13 a heavier grind?

Thanks
I know there are several out there that are pretty in the know on this subject.